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Ionic and covalent bonds are present in:
(1) CCl4
(2) CaCl2
(3) NH4 Cl
(4) H2O
Ans: NH4 Cl
In a potassium atom, electronic energy levels are in the following order: (1) 4s>3d (2) 4s>4p (3) 4s (4) 4s Ans: 4s
I have 11.2 L of a gas at stp. I need to use the molar volume to find how many molecules are in that gas.
some examples of RELATIVE MOLECULAR MASS OF SOLUTES BY RELATIVE LOWERING OF VAPOR PRESSURE
why C-12 is taken as standard for atomic mass?
Physical properties of Formic Acid (a) Formic Acid is a pungent smelling and colourless liquid. (b) Formic Acid melts at 8.4° C and boils at 100.5° C . (c) Formic Acid i
what is frenkel defect ?
types of electromeric effect
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The mass of a photon with a wavelength equal to 1.54 x 10 -8 cm is: (1) 0.8268 x 10 -34 kg (2) 1.287 x10 -33 kg (3)1.4285x 10 -32 k
The number of electrons in the nucleus of C 12 is (1) 6 (2) 12 (3)0 (4)3 Ans: 0
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