Chemistry · p-Block (I) (Grp. 13, 14)

JEE Main 2026 — 24 January, Evening Shift — Question 49

Choose the INCORRECT statement

Option A:
Among the isotopes of carbon, ${ }^{13} \mathrm{C}$ is a radioactive isotope.
Correct
Option B:
Carbon exhibits negative oxidation states along with +4 and +2 .
Option C:
Carbon cannot exceed its covalency more than four.
Option D:
$\mathrm{CO}_{2}$ is the most acidic oxide among the dioxides of group of 14 elements.

Answer: A

$\mathbf{C}^{\mathbf{1 3}}$ is not radioactive $\mathbf{C}^{\mathbf{1 4}}$ is radioactive

Answer key and solution verified before publishing.

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