17. in which of the following cases does an atom have a positive charge?
a. there are more neutrons than electrons.
b. there are more electrons than protons.
c. there are more protons than electrons.
d. there are more electrons than neutrons.

ANSWER:

An atom is said to be positively charged when there are more number of protons than electrons.

EXPLANATION:

Atoms consist of electrons, protons and neutron. Protons are said to be positively charged particles and electrons are found to be negatively charged.

The neutrons are neutral as it has no charge. So, when the number of protons in an atom is more than the number of electrons, the atom has more positive charge than negative charge and so is said to be positively charged.

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explanation: