An electron-deficient compound among the following is:
1. | (SiH3)2 | 2. | (BH3)2 |
3. | PH3 | 4. | (CH3)2 |
Which of the following is the most basic oxide?
1.
2.
3.
4.
The number of sigma () and pi () bonds in pent-2-en-4-yne is:
1. 13 bonds and no bond
2. 10 bonds and 3 bonds
3. 8 bonds and 5 bonds
4. 11 bonds and 2 bonds
1. | The H-O-H bond angle in H2O is larger than the H-C-H bond angle in CH4 |
2. | The H-C-H bond angle in CH4 is larger than the H-N-H bond angle in NH3 |
3. | The H-C-H bond angle in CH4, the H-N-H bond angle in NH3 and the H-0-H bond angle in H2O are all greater than 90o |
4. | The H-O-H bond angle in H2O is smaller than the H-N-H bond angle in NH3 |
The strongest hydrogen bond present among the following is-
1.
2.
3.
4.
Among the following atomic orbital overlaps, the non-bonding overlap is:
1. | ![]() |
2. | ![]() |
3. | ![]() |
4. | ![]() |
A pair in which both species are not likely to exist is:
1. | \(H^+_2,He^{2-}_2\) | 2. | \(H^-_2,He^{2+}_2\) |
3. | \(H^{2+}_2,He_2\) | 4. | \(H^+_2,He^{2+}_2\) |
Combination of atoms A and B that forms an anti-bonding molecular orbital is :
1.
2.
3.
4.