How many protons are in an atom represented by #""_88^220Ra#?

1 Answer
May 1, 2016

Answer:

If it is a radium isotope, then there are #88# #"nucular"# protons.

Explanation:

The number of protons determines elemental identity: for radium #Z=88#. We don't even need the subscripted symbol to determine this.

A more searching question would have been to ask how many NEUTRONS this isotope contains. Well, how many?