Point Groups

Question 0

D_~h

Answer 0

Linear. Perpendicular reflection plane.

Question 1

C_~v

Answer 1

Linear. No perpendicular reflection plane.

Question 2

C_1

Answer 2

Has only E

Question 3

C_s

Answer 3

Has only E and reflection plane.

Question 4

C_i

Answer 4

Has only E and i

Question 5

D_nh

Answer 5

Has principal rotation axis with perpendicular C2 axis and horizontal reflection plane.

Question 6

D_nd

Answer 6

Has principal rotation axis with perpendicular C2 axis. Dihedral reflection plane but no horizontal reflection plane.

Question 7

D_n

Answer 7

Has principal rotation axis with perpendicular C2 axis. No dihedral reflection plane or horizontal reflection plane.

Question 8

C_nh

Answer 8

Has principal rotation axis but no perpendicular C2 axis. Has horizontal reflection plane.

Question 9

C_nv

Answer 9

Has principal rotation axis but no perpendicular C2 axis. Vertical reflection plane but no horizontal reflection plane.

Question 10

S_2n

Answer 10

Has principal rotation axis but no perpendicular C2 axis. No dihedral reflection plane or horizontal reflection plane. Has improper rotation axis.

Question 11

C_n

Answer 11

Has principal rotation axis but no perpendicular C2 axis. No dihedral reflection plane or horizontal reflection plane or improper rotation axis.

Question 12

Octahedral

Answer 12

six atoms or groups of atoms are symmetrically arranged around a central atom

Question 13

Tetrahedral

Answer 13

Four atoms or groups of atoms or ligands are symmetrically arranged around a central atom