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Why do force of attraction between nucleus and electrons decrease in alkali metal as increase in size?
Wiki User
∙ 12y ago
As alkali metals increase in size, the distance of the outermost electrons from the nucleus increases. The attraction between the electrons and the nucleus is electrostatic, and it is a fundamental property of electrostatic attractions that the attraction decreases with increasing distance between the attracting charges. Another way of describing this is that the attractive force is partially "screened" by the inner electrons between the outermost electrons and the nucleus.
Wiki User
∙ 12y ago
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Does the speed increase or decrease with the attraction between particles when changed from liquid to gas?
Yes, the speed increases when a liquid changes to a gas, And the attraction between particles also decreases. :) -Anouymous
Would the trend in atomic size cause an increase or a decrease in the attraction between the nucleus and the valence electron within the group as the atomic number increases?
Atomic size increases from top to bottom in a group due to increase in theshieldingeffect.As you go down the group shielding from core electrons increases (as more core electrons are added), therefore valence electrons experience weaker attraction forces from the nucleus and are located further away from it, resulting in an increase in size.If you move across a period the attraction between the nucleus and valence electrons increases because the number of protons and the number of valence electrons both go up whereas the number of core electrons stays the same (shielding decreases). In this case the size decreases.
Why sharing electrons causes atoms to bond together?
When electrons are shared between atoms, the nuclei of both atoms experience attraction towards the electrons and vice versa. At a certain distance, the attraction is maximal because the repulsion between the nuclei is small while the attraction of each nuclei to the electrons is strong. Thus, the atoms are held together by their attraction to the shared electrons.
Why electron affinity value decreases from top to bottom?
It decreases as you go down a group because the atomic radius increases, and the energy shells increase, so the attraction is less. also, the number of electrons going down a period also increase, so there is more repulsion, and its harder to add electrons.
Why Ionization potential decrease from top to bottom in s block element?
As from top to bottom on a periodic table one energy shell is added. Thus the distance between the electrons and the protons increase and the attraction force decreases. Then it becomes easier to get one electron out from the most outer shell. This is why the ionization potential decreases.
Does the speed increase or decrease with the attraction between particles when changed from liquid to gas?
Yes, the speed increases when a liquid changes to a gas, And the attraction between particles also decreases. :) -Anouymous
Would the trend in atomic size cause an increase or a decrease in the attraction between the nucleus and the valence electron within the group as the atomic number increases?
Atomic size increases from top to bottom in a group due to increase in theshieldingeffect.As you go down the group shielding from core electrons increases (as more core electrons are added), therefore valence electrons experience weaker attraction forces from the nucleus and are located further away from it, resulting in an increase in size.If you move across a period the attraction between the nucleus and valence electrons increases because the number of protons and the number of valence electrons both go up whereas the number of core electrons stays the same (shielding decreases). In this case the size decreases.
What happens to the forces of attraction between charged objects and uncharged as the distance between them decreases?
As the distance decreases the attraction increases
Is an attraction between atoms so electrons are shared a physical bond?
is an attraction between atoms so electrons are shared in a physical bond
Does the gravitational attraction between earth and an asteroid decrease as the asteroid approaches earth?
The gravitational force (or attraction) between any two objects increases as the distance between them decreases. Thus, as an asteroid approaches Earth, the Earth's gravitational pull will increase as it gets nearer.
Why sharing electrons causes atoms to bond together?
When electrons are shared between atoms, the nuclei of both atoms experience attraction towards the electrons and vice versa. At a certain distance, the attraction is maximal because the repulsion between the nuclei is small while the attraction of each nuclei to the electrons is strong. Thus, the atoms are held together by their attraction to the shared electrons.
What movement does not increase or decrease the angle between bones?
Rotation and supination do not increase or decrease the angle between bones.
What are core electronics?
Inner core electrons are electrons that shield attraction between protons and valence electrons.
Why does ionization energy tends to decrease from top to bottom within a group?
The number of energy levels increases from top to bottom of a group. So the electrons are easy to remove. So the ionization energy decreases.
What is the strength of attraction between a nucleus and the outermost electrons?
1
Why electron affinity value decreases from top to bottom?
It decreases as you go down a group because the atomic radius increases, and the energy shells increase, so the attraction is less. also, the number of electrons going down a period also increase, so there is more repulsion, and its harder to add electrons.
The effect of inner electrons on the attraction between the nucleus and the outer electrons of an atom is called?
electronegativity
