Question

How many electrons in an atom may have the following quantum numbers
1.n=4,m=1/2
2.n=3,I =0

Answer 1

ʜᴇʏᴀ ᴍᴀᴛᴇ ʜᴇʀᴇ ɪs ʏᴏᴜʀ ᴀɴsᴡᴇʀ 
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●2n sq. = 32...out of 32, 12 will have m=1/2...so answer is 12.

●3n i.e only 2 electrons in the s orbital.