Which of the statements given below is incorrect?
1. is an anhydride of perchloric acid
2. molecule is bent
3. ONF is isoelectronic with
4. is an oxide of fluorine
The variation of the boiling point of the hydrogen halides is in the order HF > HI > HBr > HCl.
The higher boiling point of hydrogen fluoride is explained as:
1. | The electronegativity of flourine is much higher than other elements in group |
2. | There is strong hydrogen bonding between HF molecules |
3. | The bond energy of HF molecules is greater than in other hydrogen halides |
4. | The effect of nuclear shielding is much reduced in flourine which polarizes the HF molecule |
The given sequence among the following arrangements that is not strictly according to the property indicated against it.
1. | \(\small{i n c r e a sin g \ p K_{a}\ v a l u e s}\) | H2O < H2S < H2Se < H2Te :
2. | \(\small{N H_{3} < P H_{3} < A s H_{3} < S b H_{3} : i n c r e a sin g \ a c i d i c \ c h a r a c t e r}\) |
3. | \(\small{C O_{} < S i O_{} < S n O_{} < P b O_{2} : i n c r e a sin g \ o x i d i sin g \ p o w e r} \) |
4. | \(\small{H F < H C l < H B r < H I : i n c r e a sin g \ a c i d i c \ s t r e n g t h} \) |
Which of the following compounds has the lowest melting point?
1.
2.
3.
4.
Among the following which is the strongest oxidising agent?
1.
2.
3.
4.