How many protons, electrons, and neutrons does a neutral atom of an element with atomic number 48 and mass number 120 contain?

Answer 1

The element is characterized by the number of protons, massive, positively charged nuclear particles. Here #Z=48#

The mass of an atom is the sum of massive nuclear particles, protons (as above), and neutrons, neutrally charged, massive nuclear particles. Here the number of neutrons #=# #120-48=?#

In the neutral element, if there are #48# positive charges, there are #48# negative particles, i.e. #48# electrons, conceived to orbit the massive core.

I could describe the element as #""^120M#, where #Z=48#. What is the name of the element, and what is its symbol?

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Answer 2

Owen Ambrose

A neutral atom of an element with atomic number 48 and mass number 120 contains 48 protons, 48 electrons, and 72 neutrons.

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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.