Which species contain(s) bond angles of approximately 120∘120^\circ120∘?
1 BF3\quad \text{BF}_3BF3
2 SO2\quad \text{SO}_2SO2
3 NCl3\quad \text{NCl}_3NCl3
Only 1
Only 1 and 3
Only 1 and 2
1, 2 and 3