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Bohr's radius can have:
(1) Discrete values
(2) +ve values
(3) - ve values
(4) Fractional values
Ans: +ve values
The four quantum numbers of the outermost orbital of K (atomic no. =19) are: (1) n= 2, l= 0, m=0, s= +1/2 (2) n= 4, l= 0, m=0, s= +1/2 (3) n= 3, l= 1,
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Which of the following substances has covalent bonding: (1) Germanium (2) Sodium chloride (3) Solid neon (4) Copper Ans: Germanium
what are the practical applications of photochemistry
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Evidence in favor of Kekule's structure 1. Benzene combines along with 3 molecules of hydrogen or three molecules of chlorine. It also collides along with 3 atoms of ozone to
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Uses of Glucose (a) Glucose is used in the conservation of fruits and making of jams and jellies. (b) Glucose is used in the preparation of confectionary and as a sweetening
Azimuthal quantum number for last electron of Na atom is: (1) 1 (2) 2 (3) 3 (4) 0 Ans: 0
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