Question

Which of following
care true of one element
(a) atomic number = number of proton + no of elctron
(b) Mass Number = number of proton + no of neutron
(c) Atomic mass = no of proton = no of reutron
(d) Atomic no = number of proton = no of electron
(1) A&B (b) A&C (c) B&C (d) B&D​

Answer 1

d) B and D are correct....

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