Asked Sep 10, 2019

how do I find out the valance electrons, number of neutrons, and protons on an element from the periodic table?


Expert Answer

Step 1

We have to explain how the valence electrons, number of protons and neutrons can be determined from the periodic table.

Step 2

In periodic table, all the elements are arranged in increasing order of their atomic number.

Atomic number is the number of protons in an atom.

Mass number is the sum of number of protons and neutrons.

Step 3

Thus, from the periodic table we know the atomic number of the element.

  • Atomic number = number of protons
  • For neutral atom, number...

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