Which of the following best describes thevalence-electron configuration of the g

Question

Which of the following best describes thevalence-electron configuration of the group 3A elements?
A)Group 5A Rank From highest to lowest oxidation number of phosphorus PH3 PCl5 H3PO4 PCl3 B)group 4A Specify which of the following substances are allotropes of carbonand which are not. quartz, fullerene,graphite,charcoal,diamond,carbonate,carbonnanotube C)group 6A Order the group 6A elements according to their ability to act as areducing agent.from strongest to weakest. sulfur, tellurium, selenium, oxygen D)How many electrons short of an octet are group 6A elements?. 1,2,3 or4 E) group 3A Classify the 3A elements according to the type of compound theyform. Forms ionic or forms covalent Ga, Al, In, B, Tl F) Which of the following best describes thevalence-electron configuration of the group 3A elements? ns^2np^1 ns^2np^2 ns^2np^3 ns^2np^4

Explanation / Answer

a)           H3PO4 ˜ PCl5 > PCl3 > PH3
                  +5        +5        +3      -3 b) Allotropoes of C :                                   Diamond and Graphite Non allotropes of C :   quartz,fullerene,charcoal,carbonate,carbon nanotube                                    c) tellurium> selenium > sulfur > oxygen
d) 2 e) B - covalent Remaining - ionic f) ns2np1

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