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How many sodium atoms are present in one formula unit of sodium chromate [tex] Na_2CrO_4 [/tex]?

A. 1 atom
B. 2 atoms
C. 7 atoms
D. 4 atoms

Sagot :

GinnyAnsweridn
To determine the number of sodium atoms in one formula unit of sodium chromate ([tex]\( Na_2CrO_4 \)[/tex]), we need to read and interpret the chemical formula.

1. The formula for sodium chromate is [tex]\( Na_2CrO_4 \)[/tex].
2. The subscript [tex]\( 2 \)[/tex] placed next to the sodium symbol ([tex]\( Na \)[/tex]) indicates the number of sodium atoms present in one formula unit of sodium chromate.
3. This means there are 2 sodium atoms.

Therefore, the number of sodium atoms in one formula unit of sodium chromate is:
C. 2 atoms
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