Question

what is the coordination in two dimensnal hexagonal close packing.​

Answer 1

Explanation:

The hexagonal closest packed (hcp) has a coordination number of 12 and contains 6 atoms per unit cell. The face-centered cubic (fcc) has a coordination number of 12 and contains 4 atoms per unit cell. The body-centered cubic (bcc) has a coordination number of 8 and contains 2 atoms per unit cell.

Answer 2

Answer:

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A coordination number is the number of ions and atoms around a central neutron or the total number of attachment locations to the central element in a molecule. The packing of constituent particles inside lattice in such a way that they occupy maximum available space in the lattice is known as Close Packing. The packing in which one sphere touches two spheres placed in two different rows one above and one below is known as square closed packaging. The coordination number here is 4.