JEE Main levelSingle correct optionDifficulty 2 of 3pn011
Assertion: Nitrogen shows a maximum covalency of 4, unlike the other elements of group 15. Reason: Nitrogen has no d orbitals in its valence shell.
ABoth Assertion and Reason are true and the Reason is the correct explanation of the Assertion
BBoth Assertion and Reason are true but the Reason is not the correct explanation of the Assertion
CAssertion is true but Reason is false
DAssertion is false but Reason is true
Answer: A
Nitrogen has only 2s and 2p orbitals available (four orbitals), so it can form at most four covalent bonds, e.g. in NHX4X+. The other members have nd orbitals and can show covalency up to 6. The reason correctly explains the assertion.