Which of the following conversions demonstrates an increase in bond order and a change in magnetic behaviour?
1.
2.
3.
4.
The molecule having the smallest bond angle is-
1. | PCl3 | 2. | NCl3 |
3. | AsCl3 | 4. | SbCl3 |
The is a planar molecule whereas is pyramidal because:
1. bond is more polar than bond.
2. Boron atom is bigger than nitrogen atom.
3. Nitrogen is more electronegative than boron.
4. has no lone pair but has a lone pair of electrons.
The correct order of acidic strength is :
1.
2.
3.
4.
A diatomic molecule has a dipole moment of 1.2 D. If its bond length is equal to 10 -10 m , then the fraction of an electronic charge on each atom will be:
1. 42%
2. 52%
3. 37%
4. 25%
When two atoms combine to form a molecule, energy is:
1. | Released. | 2. | Absorbed. |
3. | Neither released nor absorbed. | 4. | Either released or absorbed. |
Compounds that have a maximum value of lattice energy among the following, is:
1. | NaF | 2. | NaCl |
3. | NaBr | 4. | NaI |
A Compound with maximum ionic character is formed from:
1. | Na and I | 2. | Cs and F |
3. | Cs and I | 4. | Na and F |
Most covalent compound among the following is :
1. | AlF3 | 2. | AlCl3 |
3. | AlBr3 | 4. | AlI3 |
The correct order of covalent bond character among
LiCl, BeCl2, BCl3 and CCl4, is:
1. LiCl < BeCl2 > BCl3 > CCl4
2. LiCl > BeCl2 < BCl3 < CCl4
3. LiCl < BeCl2 < BCl3 < CCl4
4. LiCl > BeCl2 > BCl3 > CCl4