Answer:
(b) Given that, charge = - 3, mass number =27 and
number of neutrons =14
Number of protons = atomic number
Atomic number = mass number - number of neutrons = 27 - 14
= 13
This is the atomic number of aluminium.
Therefore, this element is aluminium (Al).
Number of electrons in the Al atom = 13
Number of electrons in the =13-3=10.
As it is formed from the neutral atom by loss of 3
electrons.
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