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Mass of total positive charge present in an atom in the 16533 times to that of mass of electron find the atomic number of this element

Atul Ranjan , 3 Years ago
Grade 9
anser 2 Answers
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

kavya

Last Activity: 3 Years ago

(i) Comparison of mass of electron and proton
(ii) Calculation of number of electrons.
 
hope it helps u 

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