Class 12 Chemistry · Chapter 1 · Test 1
Group 2 Trends
38 MCQs This test covers the s-block position, electronic configurations, metallic and ionic radii, ionization energies, electronegativity, melting point, density and electrode potentials of Be to Ba.
38 questions · 30 min · 38 marks
Sample questions
The first 5 of 38. Try each one, then tap to see the answer.
Question 1
Group 2 elements are also known as the:
- AAlkali metals
- BAlkaline earth metals
- CTransition metals
- DHalogens
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Answer: B
They are called alkaline earth metals because of their metallic nature and their occurrence in the earth's crust.
Question 2
Group 2 elements belong to which block of the periodic table?
- As-block
- Bp-block
- Cd-block
- Df-block
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Answer: A
Their outermost electrons occupy an s subshell, so they are s-block elements.
Question 3
What is the general outer-shell electronic configuration of Group 2 elements?
- Ans1
- Bns2np1
- Cns2
- Dns2np2
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Answer: C
All Group 2 elements have two electrons in the outermost s subshell (ns2).
Question 4
What is the electronic configuration of magnesium?
- A[Ne]3s1
- B[He]2s2
- C[Ar]4s2
- D[Ne]3s2
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Answer: D
Magnesium (Z = 12) has the configuration [Ne]3s2.
Question 5
What is the atomic number of calcium?
- A12
- B38
- C20
- D56
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Answer: C
Calcium has atomic number 20 and configuration [Ar]4s2.
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