How many electrons have an azimuthal quantum number (l) with the value +1 in a fluorine atom?

a. zero
b. six
c. two
d. five
e. four

5

Explanation:

F:1s²2s²2p₋₁²2p₀²2p₊₁¹

QN's for each of nine Fluorine e⁻'s => values in 'bold' are the orbital (or, azimuthal) QN's with values = +1.

           n    l     m    mₓ

1s¹        1     0    0   +1/2

1s²       1     0    0   -1/2

2s¹       1     0   0   +1/2

2s²       1     0    0   -1/2

2p₋₁¹     1     +1  -1   +1/2

2p₀¹      1     +1   0   +1/2

2p₊₁¹     1     +1  +1   +1/2

2p₋₁²     1     +1    -1   -1/2

2p₀²      1     +1   0   -1/2

2p₊₁     (empty orbital)

the earth would become to overheated and everything alive on it will eventually die from overheating. plants will eventually die as well, water will evaporate, and it will be nothing but a hot planet without anything living on it.

the answer is na (sodium)