Definitions

Question 1

Electronegativity

Answer 1

The ability of an atom to attract a pair of electrons in a covalent bond.

Question 2

Relative atomic mass AR

Answer 2

The average mass of an atom of an element on a scale where an atom of carbon-12 is 12.

Question 3

Relative isotopic mass

Answer 3

The mass of an atom of an isotope of an element ona scale where an atom of carbon-12 is 12.

Question 4

Relative molecular mass MR

Answer 4

The average mass of a molecule on a scale where an atom of carbon-12 is 12.