Atomic Structure Question 68

Question: An atom has the electronic configuration of 1s2,2s22p6 , 3s23p63d10,4s24p5 . Its atomic weight is 80. Its atomic number and the number of neutrons in its nucleus shall be

Options:

A) 35 and 45

B) 45 and 35

C) 40 and 40

D) 30 and 50

Show Answer

Answer:

Correct Answer: A

Solution:

35Br80,=1s2,2s2,2p63s23p63d104s24p5

A=,80 , Z=,35 , N=,

N=AZ=8035=45 atomic number (Proton) is 35 and no. of neutron is 45.



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