Frequently Asked Question

Questions asked by users might not always be phrased in the clearest way.

Which element has atoms with . 5 protons , 15 protons , 20 protons

Accepted Answer

The number of protons in an atom's nucleus defines its atomic number and identifies the element.

5 protons: Boron (B)
15 protons: Phosphorus (P)
20 protons: Calcium (Ca)


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