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InOrganic Chemistry -- Periodic Table
16.
If the aufbau principle had not been followed, Ca(Z = 20) would have
been placed in the
- A.s-block
- B.p-block
- C.d-block
- D.f-block
- Answer
- Report
Answer : [C]
17.
Among the equations given below, the one whose △Ho value equals the first ionization energy of Ca is
- A.Ca+(g)→ Ca 2+(g) + e
- B.Ca(g)→Ca+(g) + e
- C.Ca(s)→Ca+(g) + e
- D.Ca(g)→ Ca 2+(g)+ 2e
- Answer
- Report
Answer : [B]
18.
Which of the following oxides is neutral?
- A.SnO2
- B.CO
- C.Al2O3
- D.Na2O
- Answer
- Report
Answer : [B]
19.
Which of the following is the least stable?
- A.PbI4
- B.KCl
- C.GeI4
- D.SnI4
- Answer
- Report
Answer : [A]
20.
Among the following, the element with the lowest atomic number that
has a ground-state electronic configuration of (n-1)d6ns2 is located in
the
- A.fifth period
- B.sixth period
- C.fourth period
- D.third period
- Answer
- Report
Answer : [C]
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