Which one of the following molecules are chiral? please help with 20-23 Which on

Question

Which one of the following molecules are chiral? please help with 20-23

Which one of the following molecules is chiral? Hydrocarbons containing carbon-carbon triple bonds are called _____. A) alkenes B) aromatic hydrocarbons C) olefins D) alkanes E) alkynes When a neutron in the nucleus is converted to a proton, which of the following is emitted? A) alpha particle B) neutron C) positron D) beta particle E) deuteron Which of these nuclides is most likely to be radioactive? A)^243_95 Am B)^39_19 K C)^209_83 Bi D)^27_13Al E)^127_53 I

Explanation / Answer

20 Ans is E

in order for a molecule to be chiral, the carbon must be asymmetric ie. different substituents

21 ans is E

triple bonded compounds are called alkynes

Double bonded compounds are alkenes

Single bonded compounds are alkanes

22 ans is D

0n1 0p1 + -1e0

23 ans is A

The nuclei of all elements with atomic numbers greater than 83 are unstable. Thus all isotopes of all elements beyond bismuth in the periodic table are radioactive.

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