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The distance from the centre of the nucleus to the outermost shell of an atom is called the atomic radius of that atom..

The distance from the centre of the nucleus to the outermost shell of an atom is called the atomic radius of that atom (Fig. 2.1..

To Calculate the Radius of Atom by Making Use of Avogadro's Hypothesis - By Avogadro's hypothesis, the actual volume occupied by the atoms in one gram of a substance is 2/3 r d of the volume occupied by 1 gram of the substance. Let us consider a sample of a substance o..

By Avogadro's hypothesis, the actual volume occupied by the atoms in one gram of a substance is 2/3 r d of the volume occupied by 1 gram of the substanc..

A cation is formed by the loss of one or more electrons from the gaseous atom. Thus, the whole of the outer most shell of electrons is removed resulting in the smaller size in the cation. For example, in lithium atom, there is only one electron in the outermost '2s' shell. As t..

Derivation of the Relationship Between Radius r of the Octahedral Void and the Radius R of the Atoms in the Close Packing. A sphere fitting into the octahedral void is shown by shaded circle. A sphere above and a sphere below this small (shaded) sphere have not be..

A tetrahedral void may be represented in a cub..

The size of the atom is significant in governing its property. If the atom is assumed to be spherical, then the radius of the sphere gives the atomic radius. But it is difficult to exactly determine the radius of the atom becaus..

: Na, Mg, K, Ca g lose electrons S, O, F, Cl g gain electrons Most of these atoms try to attain the configurations of either neon (2,8) or argon (2,8,8). By the loss or gain of electrons a neutral atom is changed to an ion . Ions are charged atoms or a group ..

Element Symbol Atomic Number Relative Atomic mass Actinium Ac 89 227 Aluminium Al 13 27 Americium Am 95 243 Antimony Sb 51 122 Argon Ar 19 40 Arsenic As 38 75 Astatine At 95 210 Barium B..