_______ valencies are directional in nature.

(a)

primary

(b)

secondary

(c)

tertiary

(d)

None

The number of trans positions in a octahedral complex is _________.

(a)

6

(b)

4

(c)

3

(d)

2

The chemical formula for diammine silver (I) chloride is _______.

(a)

[Ag(NH₃)₂] Cl

(b)

[Ag(NH₃)]Cl

(c)

[Ag(NH₂)₂]Cl

(d)

[Ag(NH₄)₂]Cl

Magnetic moment is given by the formula _______.

(a)

\(\sqrt { n(n+1) } \)

(b)

\(\sqrt { n(n+2) } \)

(c)

\(\sqrt { (n+2) } \)

(d)

\(\sqrt { { n }^{ 2 }+(n+2) } \)

The oxidation state of the central metal ion in the complex [Co(H₂O)(CN)(en)₂]²⁺ is________.

(a)

0

(b)

+1

(c)

+2

(d)

+3