4) Give the abbreviated electron configuration for each of the following: (10 pt

Question

4) Give the abbreviated electron configuration for each of the following: (10 pts.) a) Mo b) Si d) Tb e) Cr 5) Using orbital diagrams to support your answer, determine the number of unpaired electrons in each f the following: (10 pts.) a) Se2 b) Co c) Se d) Nb e) Mn3 Using the concept of formal charge to prove your answer, indicate which of the following is the correct Lewis structure for CH,0? (0 pts.) A) 7) Give the correct Lewis structure for each of the following, including resonance structures if any. Also indicate the geometry of the molecule, the hybridization of the central atom and the polarity of the molecule. (10 pts. each) a)(NO,) b) COCl2 c) AsF d) NH,CI

Explanation / Answer

Ans 4:

The abbreviated electron configuration of the elements or the ions are given according to the number of electrons present in the atom.

These are :

a) Mo : [Kr] 4d5 5s1

b) Si : [Ne] 3s2 3p2

c) Y3+ : [Kr]

d) Tb : [Xe] 4f9 6s2

e) Cr3+ : [Ar] 3d3

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