Question

an ion M3+ has 10 electron and 14 neutron what is the atomic number and mass number of the element M?
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Answer 1

Answer:

atomic no.=13; mass no.=27

Explanation:

metal m has +3 positive charge and has 10 electrons

∴ three electrons are less from the neutral atom m

∴atomic no.=10+3=13

mass no.=no. of protons+no. of neutrons=13+14=27

Answer 2

Answer:

Atomic Number=13

Mass Number=27

Explanation:

No of protons in the atom=10+3=13=Atomic Number

No of protons + No of neutrons=13+14=27=Mass Number