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Subjects
Science CBSE
Class 9
Atoms and molecules
Textbook questions
7.
Intext questions VII
Exercise condition:
4
m.
Answer the following questions:
1.
What is meant by the term chemical formula?
The compound's chemical formula is a
atomic representation
formula representation
symbolic representation
elemental representation
of its composition, e.g., the chemical formula of sodium chloride is
NaF
NaCl
NaBr
NaCl2
.
2.
How many atoms are present in a
(i).
\(H_2S\) molecule
3 atoms are present
3 ions are present
3 element are present
3 particle are present
.
(ii).
\(PO_4{^-}{^3}\) ion
5 element are present
5 particle are present
5 ions are present
5 atoms are present
.
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