When an electron jumps from L to K shell
Energy is absorbed
Energy is released
Energy is sometimes absorbed and sometimes released
Energy is neither absorbed nor released
When an electron jumps from (higher) L to (lower) K shell energy is released.
When a mixture of iron powder and sulphur powder is heated strongly to form iron sulphide, then heat energy is :
(a) released (b) first absorbed and then released
(c) absorbed (d) neither absorbed nor released
For the processes K+(g) I⟶ K(g) II⟶K−(g)