Electronegativity and Valency (HSC SSCE Chemistry): Flashcards

Measure of how strongly atom attracts electrons in a bond

Difference >1.5 = ionic; <1.5 = covalent

Combining capacity; number of bonds an element can form

Equals group number (Gp 1 = 1; Gp 2 = 2)

18 minus group number

0 (noble gases have stable configurations)

Number of electrons to lose

Number of electrons to gain

Both elements need to gain electrons

Cannot deduce from table; most form M²⁺