Class 9 Science Chemistry Structure Of The Atom



The ion of an element has 3 positive charges. Mass number of the atom is 27 and the number of neutrons is 14. What is the number of electrons in the ion?
(a)
13
(b)
10
(c)
14
(d)
16
Correct answer: (b) 

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is matter around us pure
metals and non metals
structure of the atom
drainage
acids