What is the total number of electrons in an atom of Cu-65?

Answer 1

For a neutral #""^65Cu# atom, there are...........

#"29 electrons......"#

An isolated, NEUTRAL atom has as many massive positive, nuclear particles in its nucleus, as there are electrons, negative extra-nuclear particles, that are conceived to whizz about the nucleus. The number of massive positive, nuclear particles gives #Z#, the atomic number, and this number defines the identity of the nucleus. For copper, #Z=29#, and thus in the NEUTRAL atom there are 29 electrons.........How many neutrons are there?

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Answer 2

Serenity Allen

An atom of Cu-65 contains a total of 29 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.