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NCERT Solutions › Chemistry › Chapter 7

Chapter 7: p-Block Elements

NCERT Solutions for CBSE Class 10 Chemistry — 8 solved questions with detailed explanations.

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Questions
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Solved Questions

Q1. The strongest oxidizing agent among halogens is:

Difficulty: Easy · Topic: Halogens

Solution

F₂ has the highest reduction potential (+2.87 V) and is the strongest oxidizing agent.

Q2. Ozone is a:

Difficulty: Easy-Medium · Topic: Ozone

Solution

O₃ is bent/angular with bond angle ~117°. Central oxygen is sp² hybridized with one lone pair.

Q3. ClF₃ has shape:

Difficulty: Easy-Medium · Topic: p-Block Elements

Solution

T-shaped.

Q4. Interhalogen compounds are formed between:

Difficulty: Easy-Medium · Topic: p-Block Elements

Solution

two different halogens.

Q5. XeF₂ has shape:

Difficulty: Easy-Medium · Topic: p-Block Elements

Solution

linear.

Q6. XeF₄ has shape:

Difficulty: Easy-Medium · Topic: p-Block Elements

Solution

square planar.

Q7. Noble gases are generally unreactive because:

Difficulty: Easy-Medium · Topic: p-Block Elements

Solution

stable electronic configuration.

Q8. The number of P-O-P bonds in cyclic metaphosphoric acid (HPO₃)₃ is:

Difficulty: Medium · Topic: Phosphorus Compounds

Solution

Cyclic (HPO₃)₃ has a six-membered ring with 3 P atoms connected by 3 P-O-P bridges.

Other Chapters in Chemistry

Ch 1: Solid StateCh 2: SolutionsCh 3: ElectrochemistryCh 4: Chemical KineticsCh 5: Surface ChemistryCh 6: Isolation of ElementsCh 8: d & f Block ElementsCh 9: Coordination CompoundsCh 10: Haloalkanes & HaloarenesCh 11: Alcohols Phenols EthersCh 12: Aldehydes KetonesCh 13: AminesCh 14: BiomoleculesCh 15: PolymersCh 16: Chemistry in Everyday Life

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