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The number of unpaired electrons in a chromic ion Cr3+ (atomic number = 24) is:
(1) 6
(2) 4
(3) 3
(4) 1
Ans: 3
Conductometric titration
State the function along with one example each of: (i) Antihistamines (ii) Antioxidants (b) What are hybrid propellants?
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The nucleus of an atom can be assumed to be spherical. The radius of the nucleus of mass number 7 is given by 1.25x 10 -13 A 1/3 cm Radius of atom is one A. If the mass number
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A substance that has a molecular structure built up chiefly or completely from a large number of similar units bonded together.
4 NH3 + 5 O2 --> 4 NO + 6 H2O How many grams of NO are actually produced when 60.02 grams of ammonia are allowed to react with 96.00 grams of oxygen? ((This is a limiting reactant
D BLOCK ELIMENT
how to draw 3D stereoisomers for a compound?
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