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Q.

An atom has the electronic configuration of 1s22s22p63s23p63d104s24p5 Its atomic weight is 80. Its atomic number and the number of neutrons in its nucleus shall be

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Detailed Solution

35Br80=1s22s22p63s23p63d104s24p5A=80,Z=35,N=?N=A−Z=80−35=45atomic number (Proton) is 35 and no. of neutron is 45.
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