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Which among the following species have the same number of electrons in its outermost as well as penultimate shell:
(1) Mg2+
(2) O2-
(3) F-
(4) Ca2+
Ans: Ca2+
Out of the following, which compound will have electrovalent bonding: (1) Ammonia (2) Water (3) Calcium chloride (4) Chloro
What is T in the indicator Eriochrome Black-T used for the determination of hardness of water?
The azimuthal quantum number is related to: (1) Size (2) Shape (3) Orientation (4) Spin Ans: Shape
What is kinetic molecular theory
verify that less than 5% of the reactants have been consumed
Q. Define atomic mass units? Atomic mass Scientists have set up a standard for the measurement of atomic mass by assigning the carbon-12 atom a mass of 12 atomic mass units (a
Q. What are ion selective membranes used in electro dialysis of brackish water. Give examples. Ans. Electro dialysis for brackish water: The ion selective membranes are use
general principle on metelurgy
Q. Define the Planck constant? The energy of a photon ( E photon) of a certain frequency (violet) is able to be calculated by using the following equation in which h represen
what is electronic displacements?
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