An elemnet x has mass no 35 and number of neutron 18. write atomic number and electronic configuration of x
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number of neutrons=mass number-atomic number
18=35-z
z=35-18
z=17
18=35-z
z=35-18
z=17
Befearless0932:
Ty
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Mass no = atomic no(no of proton) + no of neutrons
35 = atomic no (no of proton) + 18
Atomic no = 17
No of protons = no of electrons = 17
Electronic configuration =
K,L,M
2,8,7
➡️ The element is chlorine.
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