Question

Yor are given the electronic configuration of five neural atoms -A,B,C,D and E.
`A-1s^(2)2s^(2)2p^(6)3s^(2) , B-1s^(2)2s^(2)2p_(2)3s^(1), C-1s^(1)2s^(2)2p_(1),D-1s^(2)2s^(2)2p^(5),E1s^(2)2s^(2)2p^(6).`
formula for the substances containing (i) A and D (ii) B and D (iv) onle E.

Answer 1

(i) The emporical formula for the compound containing A and D is `AD_(2).` This is because atom A has two valence electrons ehile D has seven electrons. Therefore A donates two electrons to two atoms of D and the compound has formula `AD_(2).`
(ii) The empirical formula for the compound is BD because B loses on eelectron while D accept it.
(iii) Two atoms of D can share one electron each to complete their octet. Therefore, the empitical formula of the compound is `D_(2).`
(iv) Since E has the configuration of a noble gas (Ne), it is therefore, monoatomic and exists as E.