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The reason for the decrease in the atomic size of elements across a period is that
The property of elements which increases down a group of the periodic table is
Atomic orbital is
The mass of one mole of \((NH_{4})_{2}CO_{3}\) is [O=16.0, N=14.0, C=12.0, H=1.0]
The purity of a solid sample can best be determined by its
The seperation of Nitrogen from oxygen using fractional distillation of air is possible because
The species with no electron in the 3d-orbital is
Pauli exclusion principle is related to
The following glasswares are used to measure the volume of liquids EXCEPT
Which of the following species determines the chemical properties of an atom?