Correct statements for an element with atomic number 9 are
A. There can be 5 electrons for which 
and 4 electrons for which 
B. There is only one electron in 
orbital
C. The last electron goes to orbital with 
and 
D. The sum of angular nodes of all the atomic orbitals is 1 .
Choose the correct answer from the options given below:
Text Solution
Verified by ExpertsB
Element with atomic number 9 is Fluorine
5 electrons can be up-spin 
and 4 electrons can be down spin 
Unpaired electron can be in anyone of 
or 
orbital
Last electron is in 2 p subshell with 
Angular node for s -orbital 
while of each p-orbital 
Sum of all angular node 
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