Question

Which of the following sequence of explanation is appropriate for explaining the reason for the periodicity of reducing property in a period or group?
(a) Tendency to undergo oxidation decreases in a period and increases in a group.
(b) In a period ionization energy increases and in a group it decreases.
(c) In a period the atomic size decreases and in a group it increases.
(d) The elements present in the left side of the periodic table have strong reducing property.

• A. c b a d
• B. c d b a
• C. d c a b
• D. d b a c

Answer 1

The correct option is A c b a d

Reduction = The gaining of electrons

This also relates to electronegativity values, where elements with a high electronegativity (Want electrons) will undergo reduction very easily, and elements with low electronegativity (Do not want electrons) will undergo oxidation very easily

Thus the correct order of statements is:

In a period the atomic size decreases and in a group it increases.

In a period ionization energy increases and in a group it decreases.

The tendency to undergo oxidation decreases in a period and increases in a group.

The elements present in the left side of the periodic table have strong reducing property