Question

An element X has atomic number 9 and mass number 19. Its anion is represented by
(1) X2â
(2) Xâ
(3) X2+
(4) X+

Answer 1

The element X is Fluorine here with atomic number 9 and mass number 19. Its anion is ${F}^{ - }$

Answer 2

Explanation:

An element X has atomic number 9 and mass number 19. Its anion is represented by

(1) X2â

(2) Xâ

(3) X2+

(4) X+✔️