NCERT Class XI Chemistry Structure of Atom Solutions
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Question : 26
Total: 67
An atom of an element contains 29 electrons and 35 neutrons. Deduce (i) the number of protons and (ii) the electronic configuration of the element.
Solution:
Number of electrons = 29, number of neutrons = 35
(i) We know that Z = e = p
Since e = 29
∴ p = 29
(ii) Electronic configuration :1 s 2 2 s 2 2 p 6 3 s 2 3 p 6 3 d 10 4 s 1
(i) We know that Z = e = p
Since e = 29
∴ p = 29
(ii) Electronic configuration :
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