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

The atomic number of an element E is 16. The number of electrons in its ion $E^{2-}$ will be:

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

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