Question

Four elements W, X, Y and Z contain 8, 11, 9 and 17 protons per atom respectively. The element which cannot form an anion is most likely to be (a) W
(b) X
(c) Y
(d) Z

Answer 1

Answer:

a). X is correct.

Explanation:

We know :

Atomic number = Number of protons

Atomic number of W = 8

Atomic number of X = 11

Atomic number of Y = 9

Atomic number of Z = 17

Valency of all given elements written as :

W = 2 , 6

X = 2 , 8 , 3

Y = 2 , 9

Z = 2 , 8 , 7

Since 'X' is metal and denote electrons. It always form cation.

Therefore , 'X' cannot form anion is most likely.