Question

Match the following.

Compound	Oxidation no. of underlined element
i. \[\ce{\underline{C}_4H4O^{2-}_6}\]	a. +2.5
ii. \[\ce{\underline{N}_3H}\]	b. +1.5
iii. \[\ce{Mg2\underline{P}_2O7}\]	c. +5
iv. \[\ce{Na2\underline{S}_4O6}\]	d. `-1//3`

Options

• i - c, ii - b, iii - d, iv - a

• i - b, ii - d, iii - c, iv - a

• i - d, ii - c, iii - a, iv - b

• i - a, ii - d, iii - b, iv - c

Answer 1

i - b, ii - d, iii - c, iv - a

Explanation:

\[\ce{\underline{C}_4H4O^{2-}_6 -> C (+1.5)}\]

\[\ce{\underline{N}_3H -> N (-1/3)}\]

\[\ce{Mg2\underline{P}_2O7 -> P (+5)}\]

\[\ce{Na2\underline{S}_4O6 -> S (+2.5)}\]