What is the second quantum number of a 2s^2 electron in phosphorus,
1s^2 2s^2 2p6 3s^2 3p^3?
a. 1 = 0
b. 1-3
c. 1-2
d. 1= 1

l = 0

Explanation:

Second quantum number, also known as angular momentum quantum number (l), represents the shape of an orbital. Several quantum numbers and their corresponding orbital shapes are worth remembering:

Notice that the angular momentum quantum number might be identified solely from the letter. Since we're considering a orbital, this means we're dealing with an s orbital. As defined above, s-shaped orbital would have an l value of l = 0.

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i think? ?