Question

What is the first ionization energy of an element that has the electron configuration 2-8?

Answer 1

Well, if it has got 10 electrons, it has got 10 protons....

Explanation:

And protons are the fundamental, massive, positively-charged particles that live in the nuclear core. And the number of protons gives `Z`, `"the atomic number"`, the which defines the identity of the nucleus. And so you looks at your Periodic Table, beside you now, and you tell us what `Z=10` represents.... it starts with a `"n"`...

And then you look up the first ionization energy of this element, which will be in your text or on the webz....

`underbrace(M(g)+Delta rarr M^+(g) +e^(-))_"this represents the first ionization of the element"`