Question:
Identify the incorrect statement:
Identify the incorrect statement:
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Saline hydrides liberate dihydrogen gas at the anode during electrolysis, and hydrides of group 15 elements tend to be Lewis bases due to the lone pair of electrons.
Updated On: May 19, 2025
- Saline hydrides on electrolysis liberate dihydrogen gas at anode
- \(CH_4\) is an electron precise hydride
- Chromium hydride conducts heat and electricity
- Hydrides of group 15 elements behave as Lewis acids
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The Correct Option is D
Solution and Explanation
Step 1: Analyzing Statement A
Saline hydrides such as sodium hydride (NaH) do release dihydrogen gas at the anode when electrolyzed. This statement is true.
Step 2: Analyzing Statement B CH₄ (methane) is an electron-precise hydride because it follows the octet rule, and each carbon in CH₄ has exactly 4 bonds. This statement is true.
Step 3: Analyzing Statement C Chromium hydride (CrH₆) is known to conduct both heat and electricity, like most metallic hydrides. This statement is true.
Step 4: Analyzing Statement D Hydrides of group 15 elements, such as NH₃, do not behave as Lewis acids. They are more likely to act as Lewis bases due to the lone pair of electrons on nitrogen. Therefore, statement D is incorrect.
Step 2: Analyzing Statement B CH₄ (methane) is an electron-precise hydride because it follows the octet rule, and each carbon in CH₄ has exactly 4 bonds. This statement is true.
Step 3: Analyzing Statement C Chromium hydride (CrH₆) is known to conduct both heat and electricity, like most metallic hydrides. This statement is true.
Step 4: Analyzing Statement D Hydrides of group 15 elements, such as NH₃, do not behave as Lewis acids. They are more likely to act as Lewis bases due to the lone pair of electrons on nitrogen. Therefore, statement D is incorrect.
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