Elements of Group 13, 14 and 15
Maharashtra Board · Class 11 · Chemistry
Practice quiz for Elements of Group 13, 14 and 15 — Maharashtra Board Class 11 Chemistry. MCQs and questions with answers to test your preparation.
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Quick Quiz: Elements of Group 13, 14 and 15
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What is the general outer electronic configuration of Group 13 elements?
What is the most stable oxidation state of Group 14 elements?
The molecular formula of diborane is:
Which allotrope of carbon is thermodynamically most stable?
Sample Questions
Which elements belong to the nitrogen family (Group 15)?
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Nitrogen (N), Phosphorus (P), Arsenic (As), Bismuth (Bi)
Group 15 (nitrogen family) includes N, P, As, Sb, and Bi. Silicon belongs to Group 14.
Which of the following are correct about white phosphorus?
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It glows in dark, It is poisonous, It is stored under water, It has P₄ molecules
White phosphorus shows chemiluminescence, is toxic, stored under water to prevent oxidation, and consists of tetrahedral P₄ molecules.
The hybridization of boron in BCl₃ is:
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sp²
In BCl₃, boron forms three bonds in a trigonal planar geometry, requiring sp² hybridization with one vacant p orbital.
Borax has the molecular formula:
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Na₂B₄O₇·10H₂O
Borax is sodium tetraborate decahydrate with formula Na₂B₄O₇·10H₂O, commonly used in glass manufacturing.
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