Assertion (A): | ICI is more reactive than I₂. |
Reason (R): | I-Cl bond is weaker than I-I bond. |
1. | (A) is false but (R) is true. |
2. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
3. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
4. | (A) is true but (R) is false. |
Chlorine shows the bleaching action in the presence of moisture due to the formation of
1. HOCl
2. HOClO
3. H2O2
4. O
(a) | F–F bond has a low enthalpy of dissociation. |
(b) | Flouride ion (F-) has high hydration enthalpy. |
(c) | Electron gain enthalpy of fluorine is less negative than chlorine. |
(d) | Fluorine has a very small size. |
1. | (a) and (b) only | 2. | (a) and (c) only |
3. | (a) and (d) only | 4. | (b) and (c) only |
I: | Acid strength increases in the order given as HF < HCl < HBr < HI. |
II: | As the size of the elements F, Cl, Br, I increases down the group, the bond strength of HF, HCI, HBr, and HI decreases and so the acid strength increases. |
1. | I is correct but II is false. |
2. | I is incorrect but II is true. |
3. | Both I and II are true. |
4. | Both I and II are false. |
The correct structure of tribromo octoxide is:
1. | |
2. | |
3. | |
4. |
Choose the pairs of isoelectronic compounds which are isostructural:
1. TeF2, XeF2
2. IBr2-, XeF2
3. IF3, XeF2
4. BeCl2, XeF2
Among the following, which one is a wrong statement?
1. PH5 and BiCl5 do not exist
2. pπ - dπ bonds are present in SO2
3. SeF4 and CH4 have the same shape
4. \(I_{3}^{+}\)
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