First slide

Werner's theory

Question

Statement I ; According to Werner's theory, primary valency of a metal is satisfied by neutral molecules
Statement II ; According to Werner's theory, secondary valency of a metal can be satisfied by anions

Easy

A

Statements I and II are correct
B

Statement I is correct and statement II is incorrect
C

Statement I is incorrect and statement II is correct
D

Statements I and II are incorrect

Solution

According to Werner's theory, primary valency of a metal is satisfied by anions only ;
Primary valency of a metal refers to oxidation state;
Ox.state of a metal is always positive therefore it can be satisfied by negative ions only;
Secondary valency refers to coordination number which can be satisfied either by neutral or by charged ligands.

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