Chem test corrections

Colour of light associated with an electron in a hydrogen atom moving from n=3 to n=2

Red

Number of sub levels associated with n=3 energy level

3

Number Of orbitals associated with n=2 Energy level

4

Max number of electrons that can occupy n=3 energy level in a multi electron atom

18 electrons

Rate of reaction

Change in concentration of a reactant or product per unit of time

Define electronegative

Measure of the tendency of an atom to attract a shared pair of electrons in a covalent bond to itself

Why does electronegativity value increase across the second period?

Due to increasing number of protons while atomic radius decreases

Why do electron negativity values decrease When going down the Periodic Table

Number of electron shells increase which increases the atomic radius and shielding effect of inner shells