Question

change in to reported speech f-i don't know what's happening, John, but we are finding out, replied the father ​

Answer 1

Covalent radius: Covalent bond radius refers to half of the distance two singly bonded atom of the same element. (Homonuclear X−X bond)

Van der Waals Radius: It is defined as half of the internuclear separation of two non- bonded atoms of the same element on their closest possible approach.

Atomic radius: The distance from the center of the nucleus to the outermost shell containing electron.

Ionic radius: It is a radius of an atom's ion in ionic structure. It is denoted by rion

.

The covalent and van der Waals radii decrease with increase in atomic number as we from left to right in a period.

The atomic radius abruptly increases as we move from halogens to an inert gas.

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