3.(10pts) Why must all six atoms in C2H4 bein thesame plane?
4.(10pts) Which charge(s) for the N2 molecule would give a bond order of 2.5?
5.(10pts) What are three-centered bonds?
6.(15pts) Draw the following.【題組】(a). cw-hexene
【題組】(b(. cis-2,3-dichloro-2-pentene
7. (5 pts) Which one of the following types of radiation has the shortest wavelength,the greatest en
【題組】(b) infrared radiation
【題組】 (c) visible red light
【題組】 (d) visible blue light
【題組】 (e) microwaves
8. (5 pts) Of the following,which molecule or ion has the largest bond angle?【題組】(a)O3
【題組】(b) OF2
【題組】 (c)NH2-
【題組】(d) H2O
【題組】(e)C2H2
9. (5 pts) How many electrons are involved in pi bonding in benzene,C6H6?【題組】(a) 12
【題組】 (b)6
【題組】(c)3
【題組】(d) 30
【題組】(e) 18
10. (10 pts) Define ‘empirical formula’ and ‘molecular formula’ of a compound.
請寫出下列別稱的國家名稱:【題組】46.太平洋燈塔:______________
【題組】47.世界糖罐:________________
【題組】48.香蕉共和國:______________
【題組】49.中東巴黎:_____________