Multiple Choice 1 . Mg CO 3 decomposes at a lower temperature than SrCO 3 becaus

Question

Multiple Choice

1.Mg CO3 decomposes at a lower temperature than SrCO3 because:

A ) Mg2+ is amphoteric, Sr2+ is not               B)   Mg2+ is more polarizing than Sr2+

C)  Sr2+ is more polarizing than Mg2+           D)  Sr2+ shows evidence of the inert pair effect

E)   MgCO3 is a polymer, SrCO3 is not

2.  Which pair is given in order of decreasing size?

    A) Cl-, Clo     B) Sr, Ca     C) I-, Br-    D) K, K+     E) none of these

3.  The number of unpaired electrons  in TiCl4, high spin in is:

    A)  0     B)  2     C) 3     D)  4      E)  5

4.  The outer shell, valence configuration for Co in CoBr4-2 is:

    A)   s2     B)   d2      C)     d4    D)     s1d1      E)     d0

5.  The Bond order for  N2is:

      A)   1.0   B)   2.0  C)   3.0  D)   2.5   E) 1.5

Please Give explanations as well! Not just answers.

Explanation / Answer

B,D,D,E,E

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