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Chemistry Past Questions

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44 questions JAMB 2505 WAEC 1623 NECO 168 CUSTOM 10

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44 questions

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Question 21

waec 2012

The atomic radii of metals are usually

Agreater than their ionic radii

Bequal to their ionic radii

Cless than their ionic radii

Dless than those of non-metals in the same period

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Question 22

waec 2012

Which of the following ions has an electron configuration different from the other?

A₁₇CI^-

B₈O^2-

C₁₂Mg²⁺

D₁₃AI³⁺

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Question 23

waec 2012

Which of the following electron configurations represents that of an atom in its ground state?

A1s ²2s¹2p₁

B1s²2s²2p⁶3s¹3p¹

C1s²2s¹2p³

D1s²2s²2p⁶3s⁰

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Question 24

waec 2012

The number of orbitals in a p-sub level of an atom is

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