First and second ionisation enthalpies (in kj/mol) of few elements are given below: Element IE1 IE2 (i) 520 7300 (ii) 900 1760 (iii) 1680 3380 (iv) 2080 3963 Which of the above elements will form halides with formula MX2 ?

Question

First and second ionisation enthalpies (in kj/mol) of few elements are given below: Element IE1 IE2 (i) 520 7300 (ii) 900 1760 (iii) 1680 3380 (iv) 2080 3963 Which of the above elements will form halides with formula MX2 ? (A) (i) and (ii) (B) (i) and (iii) (C) (ii) and (iii) (D) (i) and (iv)

Tardigrade Admin · Accepted Answer

(ii) is a reactive metal from second group, and (iii) is a reactive non-metal from 17th group. For second group elements, the difference in successive IE is less. The compound formed will be MX2.

Q. First and second ionisation enthalpies (in kj/mol) of few elements are given below :

Element $I E_{1}$ $I E_{2}$

(i) 520 7300

(ii) 900 1760

(iii) 1680 3380

(iv) 2080 3963

Which of the above elements will form halides with formula $M X_{2}$ ?

(i) and (ii)

(i) and (iii)

(ii) and (iii)

(i) and (iv)

(ii) is a reactive metal from second group, and (iii) is a reactive non-metal from $1 7^{t h}$ group.
For second group elements, the difference in successive $I E$ is less. The compound formed will be $M X_{2}$ .

Q. First and second ionisation enthalpies (in kj/mol) of few elements are given below : Element IE1​ IE2​ (i) 520 7300 (ii) 900 1760 (iii) 1680 3380 (iv) 2080 3963 Which of the above elements will form halides with formula MX2​ ?