IISER Exam Model Papers 2 : Chemistry

IISER Exam Model Papers 2 : Chemistry

16. The correct stability order of −C−−−N, −C−−−P, −C−−−As, and −C−−−Sb bonds would be

A. −C−−−N > −C−−−As > −C−−−Sb > −C−−−P.
B. −C−−−As > −C−−−N > −C−−−P > −C−−−Sb.
C. −C−−−N > −C−−−P > −C−−−As > −C−−−Sb.
D. −C−−−Sb > −C−−−As > −C−−−P > −C−−−N.

17. As predicted by VSEPR theory, the molecular shapes of XeF2 and XeF4 are respectively

A. Bent and square planar.
B. Linear and tetrahedral.
C. Bent and tetrahedral.
D. Linear and square planar.

18. Which of the following statements holds true for Cu(I) and Cu(II) complexes?

A. Cu(II) complexes are diamagnetic but Cu(I) complexes are paramagnetic.
B. Both Cu(I) and Cu(II) complexes are paramagnetic.
C. Both Cu(I) and Cu(II) complexes are diamagnetic.
D. Cu(II) complexes are paramagnetic but Cu(I) complexes are diamagnetic.

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