Elements of Group 13, 14 and 15 — Important Questions
Maharashtra Board · Class 11 · Chemistry
45 important questions from Elements of Group 13, 14 and 15 for Maharashtra Board Class 11 Chemistry, with answers.
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Important Questions from Elements of Group 13, 14 and 15
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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