Question

Define co-ordination number.

Answer 1

The number of atoms or ions immediately surrounding a central atom in a complex or a crystal

Answer 2

Answer:

Co-ordination Number:

→ The number of atoms or ions directly surrounding a central atom in a complex or crystal lattice.

→The face-centered cubic (fcc) has a coordination number of 12.

→ The body-centered cubic (bcc) has a coordination number of 8.