MANSI
Last Activity: 3 Years ago
We know that mass of a proton is 1837 times that of an electron.
∴ Atomic number of element =551101837=30
∴ Electronic configuration of the element is 2 , 8 , 18 , 2.
I HAVE DIFFERENT ANSWERS THIS WAS ONE.
NEXT ONE IS,
2, 8 , 9 , 2
2 , 8 , 18 , 1
2, 8 , 18 , 2
2 , 8 , 8 2
Answer :
3
Solution :
We know that mass of a proton is 1837 times that of an electron.
∴ Atomic number of element =551101837=30
∴ Electronic configuration of the element is 2 , 8 , 18 , 2
OKAY