Mark the correct statements out of the following:

Options

A. `He` and the highest `I.E_(1)` in the periodic table
B. `Cl` has the highest `E.A.` out of all the elements in the periodic table
C. `Hg` and `Br` are liquid at room temperature
D. In anyperiod, the atomic radius of the noble gas is lowest

Answer

A, B, C

Explanation

Elements (a), (b) and (c) are correct. Statement (d) is incorrect as in any period, the atomic radius of the noble gas is largest.