JEE Main levelSingle correct optionDifficulty 2 of 3ph177
Assertion (A): Fluorine shows no positive oxidation state in its compounds. Reason (R): Fluorine is the most electronegative element and has no d orbitals in its valence shell.
ABoth A and R are true and R is the correct explanation of A
BBoth A and R are true but R is not the correct explanation of A
CA is true but R is false
DA is false but R is true
Answer: A
Fluorine has the highest electronegativity, so it always takes the electrons in a bond and appears as −1. Having only 2s and 2p orbitals in the valence shell, it cannot expand its octet. Both statements are true and R explains A.