Question

show all work and explain concepts please

7) Consider the Zn ion. What is the correct electron configuration and magnetism? a. [Ar]3d10, diamagnetic b. [Ar]4s 3d8, diamagnetic PC c. [Ar]4S24P63d*, paramagnetic d. [Ar]3d2, diamagnetic 8) What is the correct name for Mga(PO4)2? a. Magnesium (II) phosphate PC b. Magnesium phosphate c. Tri-Magnesium diphosphate d. Phosphate magnesium 9) The chemical formula for chromium (III) sulfate is: a. Cr2(SO4)3 b. Crz(SO3)a c. CrSO3 d. CrSO4 10) Which of the following pairs is incorrectly named? a. Zno, Zinc (II) oxide b. CC14, Carbon tetrachloride c. Hg2Cl2, Mercury (II) chloride d. N2Os, dinitrogen pentoxide 11) With respect to the given Lewis structure for bromochloroiodomethane (CHBICI), which halogen substituent has the lowest electronegativity? :Br a Br b. Cl C. I d. H

Answer 1

7) Zn (30) having an electronic configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10

Zn2+ having an electronic configuration [Ar] 3d10 it is Zn 2+ ion hence 2 electrons from 3s orbitor will loss to form above electronic configuration. All electrons are in paired in d orbital hence it is diamagnetic in nature.