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How many electrons would it take to equal the mass of a helium nucleus?

Answer 1

Jeremiah Adams

Well, what is the mass of an helium nucleus.....?

Well the mass of 2 PROTONS, and 2 NEUTRONS is #6.64xx10^-27 *kg#. And clearly this mass relates to the #""^4He# nucleus

And the electronic mass is #9.11×10^(−31)* kg#

Therefore, we split the former by the latter.

#=(6.64xx10^-27 *kg)/(9.11×10^(−31)*kg)=??#

I achieve roughly 10,000 electrons.

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Answer 2

Ellie Andrews

The mass of a helium nucleus would be equal to about four 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.