Straighterline Chemistry Final/ 318 Q&A/ A+ Score Solution.
The formula for sodium sulfide is
Select one:
a. NaS
b. K2S
c. NaS2
d. Na2S
e. SeS - Answer: d. Na2S
Which one of the following formulas of ionic compounds is the least likely to be correct?
Select one:
a. NH4Cl
b. Ba(OH)...
Straighterline Chemistry Final/ 318 Q&A/ A+
Score Solution.
The formula for sodium sulfide is
Select one:
a. NaS
b. K2S
c. NaS2
d. Na2S
e. SeS - Answer: d. Na2S
Which one of the following formulas of ionic compounds is the least likely to be correct?
Select one:
a. NH4Cl
b. Ba(OH)2
c. Na2SO4
d. Ca2NO3
e. Cu(CN)2 - Answer: d. Ca2NO3
,What is the name of ClO - ion?
Select one:
a. hypochlorite
b. chlorate
c. chlorite
d. perchlorate
e. perchlorite - Answer: a. hypochlorite
Which of the following is a molecular formula for a compound with an empirical formula of CH?
Select one:
a. C2H6
b. C3H9
c. C4H10
d. C6H6
e. None of the answers is correct. - Answer: d. C6H6
Which is the correct electron configuration for gold?
Select one:
a. [Xe]4f145d96s2
b. [Xe]4f145d106s2
c. [Xe]4f135d106s2
d. [Xe]4f145d106s1
e. None of the electron configurations is correct. - Answer: d. [Xe]4f145d106s1
A(n) _________ is a point at which a standing wave has zero amplitude.
Select one:
a. crevice
,b. node
c. pit
d. burrow
e. orbital - Answer: b. node
The Pauli exclusion principle states that no ____ electrons within an atom can have the same
____ quantum numbers.
Select one:
a. 4; 6
b. 2; 4
c. 3; 6
d. 6; 10
e. 3; 8 - Answer: b. 2; 4
Emission spectra
Select one:
a. cannot be used to identify an unknown atom.
b. can be used to identify unknown atoms.
c. can be explained by the movement of protons colliding with electrons.
d. none of the. - Answer: b. can be used to identify unknown atoms.
Which one of the following equations correctly represents the process relating to the ionization
energy of X?
Select one:
a. X(s) → X+(g) + e-
b. X2(g) → X+(g) + X-(g)
c. X(g) + e- → X-(g)
d. X-(g) → X(g) + e-
, e. X(g) → X+(g) + e- - Answer: e. X(g) → X+(g) + e-
Consider the element with the electron configuration [Kr]5s24d105p5. This element is
Select one:
a. a halogen.
b. a transition metal.
c. an alkali metal.
d. an actinide element.
e. a noble gas. - Answer: a. a halogen.
Consider the element with the electron configuration [Kr]5s24d7. This element is
Select one:
a. a halogen.
b. a transition metal.
c. a nonmetal.
d. an actinide element.
e. a noble gas. - Answer: b. a transition metal.
How does atomic radius change as you move across the periodic table?
Select one:
a. Atomic radius decreases moving from left to right across a period and increases from top to
bottom.
b. Atomic radius increases moving left to right across a period and decreases from top to
bottom.
c. Smaller nuclear charge lowers energy; more electrons in an orbital lowers energy.
d. Atomic radius increases diagonally across the periodic table.
e. None of the answers is correct. - Answer: a. Atomic radius decreases moving from left to right
across a period and increases from top to bottom.
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