Use the information below to explain why the atomic radius decreases across a period.
Answers
Answer:
Detail is given below.
Explanation:
Atomic radius trend along period:
As we move from left to right across the periodic table the number of valance electrons increases. The atomic size tend to decrease in same period of periodic table because the electrons are added with in the same shell. When the electron are added, at the same time protons are also added in the nucleus. The positive charge is going to increase and this charge is greater in effect than the charge of electrons. This effect lead to the greater nuclear attraction. The electrons are pull towards the nucleus and valance shell get closer to the nucleus. As a result of this greater nuclear attraction atomic radius decreases and ionization energy increases because it is very difficult to remove the electron from atom and more energy is required.
we can see in picture A there is one positive charge and force of attraction is 2.30×10⁻⁸ N
In picture D there are 2 positive charge and force of attraction is 4.60×10⁻⁸ N
So by increasing the positive charge force of attraction also increases.
In F we can see there is more positive charge thus force of attraction is also greater.
Related Questions
Help Please. The word tsunami comes from a Japanese word meaning _________________. *
A. harbor wave
B. earthquake wave
C. tidal wave
D. harbor tide
Answers
A. harbor wave
Answer:
A.
Explanation:
give brainlist
Brainleist if correct
___________is part of the Milky Way Galaxy.
Answers
Answer:
Our Sun (a star) and all the planets around it are part of a galaxy known as the Milky Way Galaxy.
is hydrogen a neutral atom or ion
Answers
Answer:
Hydrogen is the smallest chemical element. It has one proton and one electron, making it neutral. However, the ions of hydrogen atom are charged species. Thus, the key difference between hydrogen atom and hydrogen ion is that the hydrogen atom is neutral whereas hydrogen ion carries a charge.
Answer:
A normal hydrogen (H) atom does not have any neutrons in its tiny nucleus. That tiny little atom (the tiniest of all) has only one electron and one proton. You can take away the electron and make an ion, but you can't take away any neutrons.
Explanation:
HELP PLEASE
Chemical name for As2S3
Answers
Answer:
Chemical name for As2S3 is Arsenic sulfide
Explanation:
Answer:
Arsenic Sulfide
Explanation:
Is 200 meters greater than 2000 centimeters
Answers
Answer:
200 meters.
Explanation:
2000 centimeters is 20 meters
100 centimeters = 1 meter
2000 divided by 100 = 20
Explanation:
Yes, 200 meters is greater than 2000 centimetres . Because 2000 centimetres is only 20 meters . So, 200 meters is greater.If you like this answer then mark this answer as BRAINLIEST answer.
Thank you ☺️☺️
PLZ HELP WILL GIVE U BRANILEIEST
Answers
Answer:
I'm pretty sure it is C
Explanation:
because it has the same number of protons and neutrons
What is the effect of constant stirring on the solubility of solids and liquids?
Answers
Stirring affects how quickly a solute dissolves in a solvent, but has no effect on how much solute will dissolve. The amount of solute that will dissolve is affected by temperature - more will dissolve at higher temperatures. This is called the solubility of the solute
Which of the following is a result of intermolecular forces
Answers
Answer:
The three major types of intermolecular interactions are dipole–dipole interactions, London dispersion forces (these two are often referred to collectively as van der Waals forces), and hydrogen bonds
What are the 3 ways that materials can bond?
Answers
Answer:
Ionic bonding
covalent bonding
metallic bonding
Answer:
Iether they Heat up and melt together, Gravity pulls them together into one, Or the atoms inside one decide to bond with the other.
Explanation:
Question 3 is weird but I ran out of answers.
a about worker measure the mass of some sucrose as 0.947mg. covert that quality to grams and to kilograms
Answers
The answer in kilograms 0.000000947
Is there a relationship between density of an object and whether it will float sink or water in water?
Answers
Answer:
yes there is...........
What has the higher first ionization energy? Mg or Cl
Answers
Ionization Trend: First ionization energy will increase left to right across a period and increase bottom to top of a family (column).
If we compare Mg and Cl:
Mg is column 2 (far left) in the periodic table, while Cl is column 17 (far right). Based on the ionization rule explained above, Cl will have the higher first ionization energy.
Metallic bonds have what that are freely flowing in a sea
Answers
Answer:
tRUE
Explanation:
1.the study of blood serology
2.the development of digital storage and technology for use in bioscience applications biochemistry
3.the study of poisons genetics
4.the study and use of biological structures and processes for industrial purposes bioinformatics
5.the scientific study of heredity epigenomics
6.the study of the effects and interaction of the expression of genes toxicology 7.the study of the chemistry of organisms biotechnology
8.the study of decomposition of bodies after death anthropology
Answers
The various field of science include the following;
1. Serology.
2. Bioinformatics.
3. Toxicology.
4. Biotechnology.
5. Genetics.
6. Epigenomics.
7. Biochemistry.
8. Taphonomy.
"Fields of Science"Science is the interest and application of information and understanding of the normal and social world taking after a precise strategy based on prove.
1. Serology: The study of blood.
2. Bioinformatics: The development of digital storage and technology for use in bioscience applications.
3. Toxicology: The study of poisons.
4. Biotechnology: The study and use of biological structures and processes for industrial purposes.
5. Genetics: The scientific study of heredity.
6. Epigenomics: The study of the effects and interaction of the expression of genes.
7. Biochemistry: The study of the chemistry of organisms.
8. Taphonomy: The study of decomposition of bodies after death.
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If the molar mass of a hydrocarbon is 26.0 g/mol and it’s empirical formula is CH what is the molecular formula
Answers
empirical formula
is the simplest whole number ration that defines constituent atoms in a species. The
molecular formula
is always a multiple of the
empirical formula
.
Which of the following statements about matter at
room temperature is true?
a. A solid has a definite volume, but a liquid's
volume can change.
b. Both a solid and a liquid Have a definite shape.
c. A solid has a definite shape, but a liquid's shape
can change.
d. Both a solid and a liquid have volumes that can
change.
e. A solid's shape can change, but a liquid has a
definite shape.
Answers
Answer: D
Explanation: If there was ice, the volume will change, if there was liquid (ex: water), it wouldn’t melt.Formula for:
* Density: D = M/V?
* Mass: ?
* Volume?
(CHEMISTRY FORMULAS ONLY!!)
Answers
V=nRT/P
What is a bowl-shaped crater thought to
be caused by the collapse of an empty
magma chamber?
Answers
Answer:
pyroclastic flow. a superheated cloud of gas and volcanic ash that travels swiftly down a volcanic slope. What is a bowl-shaped crater thought to be caused by the collapse of an empty magma chamber? caldera.
Explanation:
can I gave brainliest
Water
Specific Heat (J/c "C)
4.184
How much heat is needed to change the temperature of 50.0 g of water to 20.0°C
Answers
Answer:
The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object. The direction of the force on the first object is opposite to the direction of the force on the second object. Forces always come in pairs - equal and opposite action-reaction force pairs.
Explanation:
The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object. The direction of the force on the first object is opposite to the direction of the force on the second object. Forces always come in pairs - equal and opposite action-reaction force pairs.
what did ruthorford discover that thomson did not understand
Answers
Answer: Atoms aren't entirely empty space
Explanation:
Rutherford did his scatter experiment to disprove Thomson's Plum Pudding Model. Rutherford shot helium nuclei at a sheet of gold and expected the particles to all go straight through to a sensor. The reason he expected this was because Thomson said that atoms are mostly made of empty space. Not all the particles went through the gold sheet, a lot of them actually reflected back to him. This meant that atoms aren't entirely empty space and something had to deflect the helium nuclei
Which group of elements should all have similar chemical behavior?
magnesium, strontium, and sodium
b) sulfur, phosphorus, and silicon
c) hydrogen, oxygen, and nitrogen
d) argon, helium, and neon
Answers
Answer:
the correct answer is D
Hope this helps
Explain how balancing chemical equations relates to the law of conservation of matter.
Answers
Answer:
In every chemical reaction, the same mass of matter must end up in the products as started in the reactants. Showing that Mass cannot be created nor destroyed in a chemical reaction
Explanation:
A continental slope is the boundary between what to types of Earth's crust?
A Basalt and Sandstone
B Convergent and Divergent
C Continental and Oceanic
D Volcanic and Sedimentary
Answers
Answer:
c
Explanation:
I took the k12 test and got it right
A continental slope is a boundary between the Continental crust and Oceanic crust. Therefore, option (C) is correct.
What is a continental slope?A continental slope can be described as the slope between the outer edge of the continental shelf and the deep ocean floor. The continental slope is defined as a cut by submarine canyons in many locations and marks the seaward edge of the continental shelf.
Continental slopes follow the boundary between continental and oceanic crust. The Continental slope has a steepness range from 1 to 25 degrees, the average is 4 degrees.
The continental margin lies between the continental shelf and the abyssal plain and comprises a continental slope that is surrounded by the flatter continental rise. It contains thick sediments deposited by currents from the shelf and slope.
The shelf generally ends at a point of increasing slope known as the shelf break and the sea floor under the break is the continental slope.
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What is one example of reusing water?
taking shorter showers each day
watering the yard in the morning
watering flowers with dirty dishwater
turning off water in the sink while brushing teeth
Answers
Answer:
C-watering flowers with dirty dishwater
Explanation:
What is the smallest piece of an element?
O A. A speck
O B. A molecule
C. An atom
D. A crystal
Answers
Answer:
I think it's c (viewpoint)
..
Answer:
C. An atom
Explanation:
How does increasing the mass affect the kinetic and potential energy of a pendulum?
Answers
Explanation:
Anytime matter is in motion it has kinetic energy. The faster an object moves, the more kinetic energy it has. The more mass an object has, the more kinetic energy it has.
Both the kinetic energy and potential energy are directly proportional to the mass of the object. Hence, increasing the mass will increase the kinetic and potential energy of the pendulum.
What is kinetic energy ?The kinetic energy of an object is generated by virtue of its motion. Whereas, the potential energy is generated by virtue of its position. hen the object is at rest, the energy is stored in it in the form of potential energy. When the object starts moving, its potential energy starts to converts to kinetic energy.
The kinetic energy of an object is related to its mass and velocity by the equation:
Ke = 1/2 mv²
Potential energy P = mgh
where, g is the acceleration due to gravity and h is the height of the object from the surface.
Hence, both potential energy and kinetic energy are directly proportional to the mass of the object. An increase in mass increase both form of energy of the object.
Therefore, the kinetic and potential energy of the pendulum increases with mass.
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Find the element. Plz help!
Answers
Answer:
Hydrogen.
Explanation:
We see in the nucleus that we have 1 proton and 1 neutron.
The number of protons in the nucleus determines which element it is.
Element with 1 proton is the 1st element on the Periodic Table, Hydrogen.
In your own words, describe how the energy of a pendulum is changed as it moves through one cycle of its motion. Pls help online school sucks
Answers
In a perfect world without air resistance, the top of the swing would have the most potential energy, but the least amount of kinetic energy. As the pendulum falls down, it gains more kinetic energy as it travels faster due to gravitational acceleration but loses more potential energy as it loses height. The total amount of energy in the system (the sum of kinetic and potential energy) stays the same.
The energy of a pendulum is changed from Kinetic to Potential Energy (and vice-versa) when it moves through one cycle of its motion.
What is Kinetic Energy ?The kinetic energy of an object is the energy that it possesses due to its motion and is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.
Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.
When we move the bob of the pendulum to start the movement you "charge" it with Potential Energy (Gravitational) by varying its position (height) in relation to the ground.
When we release the bob it moves towards the equilibrium position changing Potential into Kinetic Energy (through the movement with Velocity).
At the equilibrium point the bob doesn't stop but goes on up to the same height "re-charging" it with Potential Energy.
The sum of Kinetic (K) and Potential (U) Energy (called Mechanical Energy is always the same:
E = K + U = constant
Therefore, The energy of a pendulum is changed from Kinetic to Potential Energy (and vice-versa) when it moves through one cycle of its motion.
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What is the most likely reason that nonmetals are electrical insulators?
Since valence shells are mostly empty in nonmetal atoms, the atoms attract and hold any electrons they can in order to fill their valence shells.
Since valence shells in nonmetal atoms are almost full, the atoms attract electrons and hold them tightly to fill their valence shells.
Since all nonmetals have valence shells that are full, they hold electrons tightly to avoid changing.
Since all nonmetals have valence shells that are completely empty, they do not attract or release any electrons.
Answers
Answer:
Since valence shells are mostly empty in nonmetal atoms, the atoms attract and hold any electrons they can in order to fill their valence shells.
Answer:
a
Explanation:
help me i will chose brainiest
Answers
Answer:
Atomic # is 9
protons 9
neutrons: 10
electrons: 9
mass :18.n u
energy shells: 18
