Question

The electrons in the atoms of two elements P and Q are distributed in three

shells having 1 and 7 electrons in their outermost shells.

i) Write the group numbers in which these elements are placed in the modern

periodic table.

ii) Write the electronic configuration of P and Q and iii)the molecular formula

of

the compound formed between P and Q.​

Answer 1

Answer: ubstances which take part in a reaction).

Chemical equation - Zn

[dil.]

Right hand side - write the products-

(substances formed as a result of the reaction).

ZnSO+ H2ls

+ H2SO4​

Explanation:

ubstances which take part in a reaction).

Chemical equation - Zn  

[dil.]

Right hand side - write the products-

(substances formed as a result of the reaction).

ZnSO+ H2ls

+ H2SO4​ese elements are placed in the modern

periodic table.

ii) Write the electronic configuration of P and Q and iii)the molecular formula

of

the compound formed between P and Q.​