Which statement is correct with respect to the property of the elements with increase in atomic number in the carbon family?

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Their metallic character decreases.

The stability of 2+ oxidation state increases.

Their ionization energy increases

Their atomic size decreases.

answer is B.

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Detailed Solution

The effective nuclear charge decreases as the distance between the nucleus and the valence electrons increases on moving down the group. As a result, valence electrons can be removed quickly. Therefore, the metallic character of the elements becomes more prominent on moving down the group.

Down the group, atomic size increases and inert pair becomes more prominent. Inert pair effect is the redundancy of s-electrons to participate in bonding. Therefore, on moving down the group in the carbon family, +2 oxidation state shows more stability than +4 oxidation state.

As effective nuclear charge increases down the group, the removal of valence electron becomes easier. Therefore, ionization energy of group 14 elements decreases on moving down the group.

Down the group, atomic size increases because of the addition of an extra shell. This increases the distance between nucleus and valence electrons.

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