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In which of these cases do we have enough information to say that the atom is electrically neutral?

AThe atom has 15 neutrons and 15 electrons.
BThe atom has 7 protons and 7 electrons.
CThe atom has 4 neutrons and 4 protons.
DThe atom has 19 electrons and 19 neutrons.

Verified Answer :

Qualtsteddy

B protons are positive and electrons are negative kinda like when to people push on a wall with the same force

Answer : The correct option, (B) The atom has 7 protons and 7 electrons

Explanation :

An atom is electrically neutral when the number of protons are equal to the number of electrons.

From the given options, option B have enough information to say that the atom is electrically neutral because in this the number of protons is equal to the number of electrons.

While the other options, A, C and D will not provide enough information to say that the atom is electrically neutral.

Thus, the correct option is, (B)

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