Atomic Radius [C] Flashcards
1
Q
What is Atomic Radius? How is it calculated?
A
Atomic Radius is half of the distance between the nucleus of two bonding atoms
2
Q
What is the trend for atomic radius?
A
Increases down the group and decreases across a group
3
Q
What is the reason for the trends of atomic radius?
A
It decreases across the period because the added protons pulls more on the electrons, but there us no extra shielding effect
It increases down a group because the extra shells have a shielding effect from the charge
4
Q
What is the trend for transition metals’ radius, why?
A
They decrease initially and increase after.
This is because the nuclear charge gets balanced by the extra shielding of the 3d sub shell.