NCERT Solutions for Class 11 Chemistry Chapter 3 Classification of Elements and Periodicity in Properties

Questions

1 Which Group Does Only Contain Metals?

A IA

B IIA

C IB

D None of the above.

View Answer

Answer:IB

2 36 Atomic Number Belongs to –

A F

B S

C D

D P

View Answer

Answer: P

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3 The Diagonal Relationship can be Observed by -

A Elements of 3rd period.

B Elements of 1st period.

C Elements of 2nd period.

D Both a and c.

View Answer

Answer:Both a and c.

4 Which One is the Heaviest Atom?

A Pb.

B U.

C Hg.

D Ra.

View Answer

Answer:U.

5 Element with Atomic Number 6 Belongs to

A IV period.

B III group.

C IV group.

D VI group.

View Answer

Answer:IV group.

6 Which Group of Elements can Form Anions Most Quickly?

A Halogens.

B Oxygen family.

C Alkali metals.

D Nitrogen family.

View Answer

Answer:Halogens.

7 What Increase While Moving Down a Group of Regular Elements?

A Atomic mass.

B Atomic number.

C Atomic weight.

D None of the above.

View Answer

Answer:Atomic number.

8 Which Element has the Highest Atomic Radius?

A Si.

B Mg.

C P.

D Al.

View Answer

Answer:Mg.

9 Which of the Following Cation has the Smallest Radius?

A Na⁺

B Li⁺

C Be₂₊

D K⁺

View Answer

Answer:Be²⁺

10 Which One is the Smallest Ion?

A Al³⁺

B Mg⁺

C Na⁺

D Ba²⁺

View Answer

Answer:Al³⁺

11 What is the Common Characteristic of Elements having 86, 54, 36, 18, and 10 Atomic Numbers?

A Inert gasses.

B Rare earth.

C Light metals.

D Halogens.

View Answer

Answer:Inert gasses.

12 What is the Characteristic of (n-1) d1-10ns0-2 Electronic Structure?

A Actinides.

B Transition elements.

C Rare gasses.

D Lanthanides.

View Answer

Answer:Transition elements.

13 What Happens to the Metallic Character of Elements When you Move from LLeft to Right of the Periodic Table?

A Decrease.

B Increase.

C Initially increases and after that decreases.

D Remains constant.

View Answer

Answer:Decrease.

14 The Californium Element Belongs to Which Family?

A Alkali metal.

B Lanthanide series.

C Alkaline earth.

D Actinide series.

View Answer

Answer:Actinide series.

15 Which of the Following Block Refers to the Element with 29 Atomic Number?

A P-block.

B D-block.

C F-block.

D S-block.

View Answer

Answer:S-block.

16 From Which Group, Does the Element Having Atomic Number 16 Belong?

A 5th

B 4th

C 6th

D 3rd

View Answer

Answer:6th

17 What is the Atomic Number of the Element with 1s 2, 2s2, 2p6, 3s2, 3p3 Electronic Configuration?

A 34.

B 49.

C 31.

D 33.

View Answer

Answer:33.

18 What is the Position of the Element Having Quantum Numbers l = 1, n = 2, s = 1/2, m = 1, in the Periodic Table?

A Group 0, period II.

B Group VIIA, period II.

C Group 0, period III.

D Group VIIA, period III.

View Answer

Answer:Group 0, period II.

19 Which Groups from the Below Options have the s-block Elements?

A IVA and IIIA.

B VIIA and VA.

C IIA and IA.

D Subgroups of B.

View Answer

Answer:IIA and IA.

20 Which Statement is not Correct for the Element with 1s2, 2s2p6, 3s1 Electronic Configuration?

A This is a non-metal.

B This creates basic oxide.

C This element is with a low electron affinity.

D This is a monovalent electropositive.

View Answer

Answer: This is a non-metal.

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