State whether True or False (I/F).
1. To form molecules, atoms always join in whole numbers.
2. Polyatomic molecules contain only one atom.
3. Electrons are the negatively charged particles in an atom.
4. The number of protons is equal to the number of electrons in an atom,
5. Calcium is a monovalent element.
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Answer:
1.false
2.false
3.true
4.true
Answer:
False
False
True
False
True