Why does atomic size increase from top to bottom?
This is caused by the increase in the number of protons and electrons across a period. One proton has a greater effect than one electron; thus, electrons are pulled towards the nucleus, resulting in a smaller radius. Atomic radius increases from top to bottom within a group. This is caused by electron shielding.
Does atomic size increase from top to bottom?
The atomic radius of atoms generally increases from top to bottom within a group. As the atomic number increases down a group, there is again an increase in the positive nuclear charge. However, there is also an increase in the number of occupied principle energy levels.
Which is wrong about group while going from top to bottom?
When we go top to bottom in group ionisation enthalpy decreases and atomic radius increases. In same group when we go top to bottom outer most electron is arranged more distance with nucleus so shielding effect becomes more. So due to shielding effect ionisation enthalpy is decreases.
Why every time new shells are being added as we move from top to bottom in a group?
(a) On going down in a group of the periodic table, the atomic size increases. When we move from top to bottom in a group, a new shell of electrons is added to the atoms at every step due to which the size of atom increases.
What happens when you move up to down on the periodic table?
Electron affinity increases from left to right across the periodic table. This is caused by the decrease in atomic radius. As we already explained, moving from left to right across a period, atoms become smaller and smaller as the atomic number increases. Electron affinity decreases as we proceed down a group.
What property decreases from top to bottom?
Atomic radius and metallic character decreases from left to right across the period and increases from top to bottom down the group.
Which is correct order of ionisation energy?
-That is why the correct order of ionisation energy is C < O < N < F.