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Consider a neutral atom with 30 protons and 34 neutrons. What is the atoms number of electrons?

Answer 1

It was sufficient for you to know that:

It is implied by neutrality that all charges cancel.

Electrons have a negative charge, while protons have a positive charge.

Consequently, regardless of the number of neutrons, a neutral atom has the same number of protons as electrons.

You have two charges, and two types of particles. If #1 + (-1) = 0#, #30 + ?? = 0?# At this point, you should be able to infer what the answer is. ;)

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Answer 2

Jeremiah Adams

Since there are always the same number of electrons in a neutral atom as there are protons, the atom with 30 protons would also have 30 electrons.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.