The atomic number of an elelment X is 19. The number of electrons in its ion X' will be:
(a) 18 (b) 19 (c) 20 (d) 21

Open in App

Solution

Answer :

option a is the correct answer.

Electroni configuration - 2, 8, 8, 1

After giving one electron the ion will form.

total number of electrons - 2 + 8 + 8 = 18

Suggest Corrections

Similar questions

The atomic number of an element Y is 17. The number of electrons in its ion $Y^{-}$ will be
(a) 17 (b) 18 (c) 19 (d) 20

If the number of protons in one atom of an element Y is 20, then the number of electrons in its ion $Y^{2 +}$ will be :

(a) 20

(b) 19

(d) 16

Join BYJU'S Learning Program