Select one: a. The mass reading of balance 1 will be much higher than the mass r

Question

Select one:

a. The mass reading of balance 1 will be much higher than the mass reading of balance 2.

b. The mass reading of balance 1 will be slightly higher than the mass reading of balance 2.

d. The mass reading of balance 1 will be slightly lower than the mass reading of balance 2.

e. The mass reading of balance 1 will be much lower than the mass reading of balance 2.

What is the electron configuration of a ground-state Fe2+ ion?

Select one:

a. [Ar]3d5

b. [Ar]4s13d5

d. [Ar] 4s14d5

e. [Ar]4d6

How many 3d electrons does a ground-state Fe3+ ion have?

Select one:

a. 3

c. 6

d. 7

e. 9

How many 4d electrons does a ground-state Cd2+ ion have?

Select one:

a. 8

b. 2

c. 9

d. 7

e. 10

How many 3d electrons does a ground-state Nb3+ ion have?

Select one:

a. 2

b. 4

d. 10

e. 5

In the complex ion [Fe(CN)6]4–, what is the oxidation number of Fe?

Select one:

a. +1

c. +3

d. –4

e. +6

In the complex ion [Cr(C2O4)2(H2O)2]–, what is the oxidation number of Cr?

Select one:

a. +1

b. +2

d. –2

e. –1

What is the systematic name for [Cu(NH3)4]Cl2?

Select one:

a. dichlorotetraamminecuprate(II)

c. copper(II) ammonium chloride

d. tetraaminocopper(II) chloride

e. tetramminecopper(II) dichloride

Explanation / Answer

1. question 1 ans (c) is correct.

2.[Ar] 3d6

3. 5 electron in 3d orbital. configuration is [Ar]3d5

4. +2 oxidation state is present. x - 6= -4, x=+2

5. +3 , x - 4 = -1, x=3 one oxalate has -2 charges.

6. tetraamminecopper(II)chloride

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