Question

1. Why does metallic bonding peak at about Group 6 and decline thereafter?

a. because after the Group 6, valence electrons begin to populate the upper, antibonding part of the d-band.

b. because with each new electron that populates each subsequent metal in the d-block, the atom gets bulkier and harder to fit in a particular structure, thus weakening the metal bond

c. because with each new electron that populates each subsequent metal in the d-block, the repulsive forces among the electrons and the nucleus grow stronger, thus weakening the metal bond

2. Metal-Hydrogen bond strengths in d-block elements:

1. increases down the group
2. decreases down the group
3. increases and then decrease down the group
4. decreases and then increase down the group.

3. Reaction given below is an example of:

    

1. Redox reaction
2. Reaction of a metal with an organometallic compound
3. Transmetallation
4. All of the above

Answer 1

eac the 2.