15. The electron distribution in an aluminium atom is : (a) 2, 8, 3 (b) 2, 8, 2
Hence, the element is Deuterium)
1H (An isotop of Hydrogen-
(c) 8, 2, 3 (d) 2, 3, 8
15. The electron distribution in an aluminium atom is : (a) 2, 8, 3 (b) 2, 8, 2
Hence, the element is Deuterium)
1H (An isotop of Hydrogen-
(c) 8, 2, 3 (d) 2, 3, 8