Identify the oxidizing agent (OA) and reducing agent (RA) in the following equation: OA: H, RA: HCl

OA: H, RA: Cl

OA: Cl, RA: H

OA: Cl, RA: HCl

As atomic number increases atomic radii also increase down group 1. ionisation energy down group 1 will also decrease because as atomic radii gets bigger there is less electrostatic force between nuclei and electrons so less energy needed to remove valence electron.