Electronegativity

• electronegativity is the attractive pull of an element on a pair of electrons in a covalent bond
• electronegativity increases across a period as the increase of protons in the nucleus increases the nuclear charge
• electronegativity decreases down a group due to increased electron shielding of the nucleus
• high - nitrogen, oxygen, chlorine, fluorine
• atoms with the same/similar electronegativity will share the electron pair equally