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