give reason for the following: (i) 40/18 Ar and 40/20 ca are called isobars. (ii)' He' and 'Ne' have a zero valency. (iii) an atom is neutral . (iv) neutral is positively charged .(v) isotopes have similar chemical properties.
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(1) bcoz both have same atomic mass...so Ar and Ca are called isobar.
(2) He have 2 electron in outermost orbit
so he have zero valency
etronic confeguretion of ne 2,8,2 his outermost orbit is completely filled....so ne have zero valency....
(2) He have 2 electron in outermost orbit
so he have zero valency
etronic confeguretion of ne 2,8,2 his outermost orbit is completely filled....so ne have zero valency....
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Answer: 40/20 CA and 40/18Ar are isobars because they are the atoms of different elements having different atomic number but the same mass number.
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