How many pairs of isotopes are there amongst the given atoms?
B] Find a pair of isobars.
C] Find an element with valency 3.
D] Identify the Element with 10 neutrons in the nucleus.
E] Calculate the number of different sub atomic particles in the atom C.
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(a)2 pairs (B,D and C,E)
(b)1 pair(A,D)
(c) element A having valency 3
(d)element E having 10 neutrons
(e)no. of electron =no. of proton =8
no.of neutron =16-8=8
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