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n 4 l 0 how many electrons
n 4 m 0 how many electrons are there
n 4 l 2 how many electrons
n 4 l 3 how many electrons
n 4 l 1 electrons
n 4 how many electrons
n 4 l 3 number of electrons
n 5 l 4 electrons
n 5 l 3 how many electrons
max electrons in n 4
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