Which element indicated by letter in the following periodic table is a gas at room temperature and a pressure of 1.0 atm? 
A) A
B) B
C) C
D) D
Correct Answer:
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Q77: KH2PO4 is
A)hydropotassium phosphate.
B)potassium dihydrogen phosphate.
C)potassium diphosphate.
D)potassium hydrogen(II)phosphate.
Q78: What group of elements does the shaded
Q79: The ion NO2- is named
A)nitrate ion.
B)nitrite ion.
C)nitrogen
Q80: What group of elements does the shaded
Q81: Which element indicated by letter in the
Q83: Which element indicated by letter in the
Q84: Which element indicated by letter in the
Q85: Which element indicated by letter in the
Q86: Use the periodic table below to answer
Q87: Use the periodic table below to answer
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