a) The mass number of an element is 18 It contains 7 electrons. what is the number of protons and neutrons in it? b) State the problem of atomic structure which was solved after the discovery of neutron?
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152
no.of protons=no.of electrons
=7
No.ofneutrons=mass number - no.of protons
=18-7=11
=7
No.ofneutrons=mass number - no.of protons
=18-7=11
Answered by
35
The problem of atomic structure which was solved after the discovery of neutron is the stability of the atom and the distribution of electrons after the nucleus.
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