8.3. Organic chemistry purification and characterization — Chemistry STD 11 Science — Question

$HCl_{ ( g )}$ are $-105,-242,-394$ and $-92\,kJ\,mol ^{-1}$

respectively. The magnitude of enthalpy of the reaction given below is $......kJ\,mol ^{-1}$

(nearest integer) $CCl _{4( g )}+2 H _2 O_{( g )} \rightarrow CO _{2( g )}+4 HCl_{( g )}$

$II.$ The ionization energy generally increases with increasing atomic number in a period.

$III.$ The electronegativity of an element is the tendency of an isolated atom to attract an electron.

Which of the above statements is/are correct?