Question

Many properties of an element and its compounds can be predicted from the position of that an element in the periodic table. What property could not be predicted this way?

• A. The acidic or basic nature of its oxide
• B. The formula of its oxide
• C. The number of isotopes it has
• D. Its metallic or non-metallic properties

Answer 1

The correct option is C The number of isotopes it has

$(\ast )$ Many properties of an element from position of element in periodic table some properties.

(i) Acidic or basic nature of oxide

(ii) Oxidationstate

(iii) Formula of oxide

(iv) Metallic or non-metallic oxide.

But it cannot tell number of isotopes it has.

Ans :- C