Answer:
Atoms with 5 or more valence electrons gain electrons forming a negative ion, or anion. why are outermost electrons only ones included in orbital filling diagram? they are the only ones involved in chemical reactions and bonding. ... 2s orbital is farther from the nucleus meaning it has more energy.
Explanation:
Uncertainty of the data hope its help you
Sorry I came a lil late,
The answer to your question is, 2.
Hope this helps! :)