Kcal/mole EE E E
SODIUM
1s 2s 2p 3s
118
1091
1653
MAGNESIUM 1s 2s 2p 3s2
175
345
1838
2526
ALUMINIUM
1s 2s 2p 3s 3p
138
434
656
2767
If the valence electrons were removed, what would be the lon charge of the element?
Na =
O-1
+1
0-3
+3

answer: mercury

explanation:

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

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