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Iso-electronic species is:
(1) F-,O-2
(2) F-, O
(3) F-, O +
(4) F-, O+2
Ans: F-,O-2
Q. What do you mean by nucleus of the atom? The nucleus of an atom for the reason that atoms have no net electrical charge scientists reasoned that if an atom contains particle
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Why conjugation increasaes the stability of a molecule?
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The maximum number of electrons which each sub-shell can occupy is: (1) 2n 2 (2) 2n (3) 2 (2l+1) (4) (2l+1) Ans: 2
why C-12 is taken as standard for atomic mass?
The valency of phosphorus in H3 PO 4 is: (1) 2 (2) 5 (3) 4 (4) 1 Ans: 5
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Wet test for basic radicals
metals iron, aluminium, copper, gold, etc. have great industrial significants. which are their important ores? important alloys of iron, aluminium and copper and their uses.
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