Question

Q 26/60 A crystal system having it's edge lengths and bond
angles respectively as a = b + c and a = B = 90°, 1 = 120° is
defined as
Hexagonal
Triclinic
Tetragonal
Orthorhombic​

Answer 1

Answer:

hexagonal

Explanation:

Answer 2

Answer: Most probably Hexagonal

Explanation:

There is a mistake in the question about angle nomenclature....

The answer cannot be triclinic because in that, alpha≠beta≠gamma≠90°should be satisfied

The other two option can easily be eliminated as they should have all right angles.

Only hexagonal can have those angles but instead the first condition shld have been c=b+a or alpha=120°