Answer:
Number in valence shell: 4
Full electron configuration: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6 5f14 6d10 7s2 7p2
Shortened electron configuration: [Rn] 5f14 6d10 7s2 7p2
Explanation:
Order of electrons shells for flerovium is 2,8,18,32,32,18,4. You have to know the max number of electrons for each electron shell. The outer shell means the valence electrons, hence the answer is 4.
