How many nitrogen atoms are in the formula for magnesium nitride?
A) 1
B) 2
C) 3
D) 4
Correct Answer:
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Q129: Which one of the following is a
Q130: The number of electrons contained in several
Q131: When a phosphorus atom combines with hydrogen
Q132: The formula of sodium chromate is
A)NaCrO₄.
B)Na₂Cr.
C)Na₂CrO₄.
D)Na₃(CrO₄)₂.
Q133: The electron dot formula for carbon monoxide,CO,is
A)
Q135: NO₂⁻ is the _ ion.
A)ammonium
B)cyanide
C)nitrate
D)nitrite
Q136: Acetylene is used in high temperature metal
Q137: The correct formula for lithium acetate is
A)LiC₂H₃O₂.
B)Li₃C₂H₃O₂.
C)Li₂C₂O₃H₂.
D)Li(C₂H₃O₂)₂.
Q138: The structure of formaldehyde,CH₂O,has
A)all ionic bonds.
B)all single
Q139: The electron dot formula for carbon dioxide,CO₂,is
A)
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