Which of the following group contains coloured ions? 1. Cu + 2. Ti +4 3. Co 2+ 4. Fe 2+

Question

Which of the following group contains coloured ions? 1. Cu + 2. Ti +4 3. Co 2+ 4. Fe 2+ (A) 1, 4 (B) 3,4 (C) 2,3 (D) 1,2

Tardigrade Admin · Accepted Answer

Cu +and Ti +4 have fully filled and empty d orbital respectively. Hence due to absence of unpaired electrons, they will be colourless. But Fe +2 and Co +2 chave unpaired electrons. Hence they will be coloured.

Q. Which of the following group contains coloured ions?
1. $C u^{+}$
2. $T i^{+ 4}$
3. $C o^{2 +}$
4. $F e^{2 +}$

1, 4

3,4

2,3

1,2

$C u^{+}$ and $T i^{+ 4}$ have fully filled and empty $d$ orbital respectively. Hence due to absence of unpaired electrons, they will be colourless. But $F e^{+ 2}$ and $C o^{+ 2}$ chave unpaired electrons. Hence they will be coloured.

Q. Which of the following group contains coloured ions? 1. Cu+ 2. Ti+4 3. Co2+ 4. Fe2+

1, 4

3,4

2,3

1,2

Cu+and Ti+4 have fully filled and empty d orbital respectively. Hence due to absence of unpaired electrons, they will be colourless. But Fe+2 and Co+2 chave unpaired electrons. Hence they will be coloured.

Q. Which of the following group contains coloured ions?
1. $C u^{+}$
2. $T i^{+ 4}$
3. $C o^{2 +}$
4. $F e^{2 +}$

$C u^{+}$ and $T i^{+ 4}$ have fully filled and empty $d$ orbital respectively. Hence due to absence of unpaired electrons, they will be colourless. But $F e^{+ 2}$ and $C o^{+ 2}$ chave unpaired electrons. Hence they will be coloured.