A cation is smaller than the corresponding neutral atom while an anion is larger. Justify.

Account for the observation that cations are always smaller than the parent atom while anions are always larger than the parent atom.

A graph of aromic radius versus atomic number is given blow: Account for the observation that cations are always smaller than the parent atom while anions are always smaller the parent atom.

Assertion : Size of an anion is larger than their parent atom. Reason : Z_(eff) of anion is greater than that of their parent atom.

Assertion : p-Dichlorobenzene is less soluble in organic solvents than the-corresponding o- isomer. Reason : o-Dichlorobenzene is polar while p dichlorobenzene is non-polar.

Account for the following trends in atomic and ionic radii of transition metals. The atomic radii of elements in 4d series are more than that of corresponding elements in 3d series.

Statement 1 : Peracids are stronger acids than corresponding carboxylic acids. Statement 2 : The anion of carboxylic acids is stabilized by resonance but not that of peracids.

The energy released during the addition of an electron to an isolated neutral atom is called electron gain enthalpy. a) Explain how electron gain enthalpy differ from electronegativity. b) The second ionisation enthalpy of an element is always greater than the first ionisation enthalpy. Give reason.

Assertion : EGE value of Al is less -ve than that of Na. Reason : Al atom is smaller than Na atom. : If both Assertion & Reason are true and the Reason is the correct explanation of the Assertion, If both Assertion and reason are true but the Reason is not the correct explanation of the Assertion, If Reason is true statement but Assertion is false, If both Assertion and Reason are false statements