Question

This/these atom/ions can form up to _____ single co-ordinate bond(s).

Answer 1

Atoms and ions can form up to four single covalent bonds.

Step-by-step explanation:

A single atom or ion can form up to four single covalent bonds.

For example, carbon (C) has four valence electrons in its outermost energy level and can form four covalent bonds. Nitrogen (N) has three valence electrons and can form three covalent bonds, as seen in the triple bond between two nitrogen atoms in N2. Other examples include oxygen (O) which can form two covalent bonds, and hydrogen (H) which can form one covalent bond.