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2) How many of the following electron configurations for the species in their ground state are correct?

I. Ca: 1s22s22p63s23p64s2
II. Mg: 1s22s22p63s1
III. V: [Ar] 3s23d3
IV. As: [Ar] 4s23d104p3
V. P: 1s22s22p63p5

Select one:

a. 1

b. 2

c. 4

d. 5

3) How many of the following are pure substances? (Check all that apply.)

Select one or more:

a. gold Correct

b. ammonia

c. water

d. carbon

f. brass

4) 1s22s22p63s23p6 is the electron configuration for which one of the following ions?

Select one:

a. S2-

b. F-

c. Na+

d. Ca+

5) How many protons, electrons, and neutrons, respectively, does 89Sr2+ have?

Select one:

a. 36, 38, 51

b. 36, 38, 53

c. 38, 36, 89

d. 38, 36, 51

6) Which of the following has the smallest radius?

Select one:

a. S2-

b. Ca2+

c. K+

d. Ar

7) How many protons are in the atom ppg__cognero__Chapter_04_Chemical_Founda?

Select one:

a. 5

b. 6

c. none of these

d. 18

8) What is the molar mass of SbCl3 which is formed when Sb reacts with Cl2 according to the unbalanced equation   ppg__cognero__Chapter_09_Chemical_Quanti

Select one:

a. 7.56 g/mol

b. 102 g/mol

c. Cannot be determined based on the information given.

d. 228.11 g/mol

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