Chemistry/Organic Chemistry Chapter 3 Passage

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jonade
Posts: 7
Joined: Fri Jan 25, 2019 7:18 am

Chemistry/Organic Chemistry Chapter 3 Passage

Post by jonade » Thu Feb 07, 2019 4:18 pm

Hello,

I have a question about Chapter 3 in the NextStep Chemistry and Organic Chemistry content book.

I did the passage practice at the end of chapter 3, and came across question 6. It reads, "Which of the following solutions is most likely to require a brown bottle for proper use in the experiment?"

According to the passage in the 2nd paragraph, it says that light-solution reactions are common to the transition metals in period 5 and below. The answer selection is:

A. Mn
B. Cd
C. Si
D. Os

I picked Cd since it is in period 5 and a transition metal, but the answer is Os, with the explanation that it is in period 6.

Can anyone elaborate?
NS_Tutor_Will
Posts: 766
Joined: Fri May 25, 2018 9:15 am

Re: Chemistry/Organic Chemistry Chapter 3 Passage

Post by NS_Tutor_Will » Sun Feb 10, 2019 8:26 am

Because the question asks for "most likely" we should choose the option that most obviously meets the criteria. Since we are looking for an element in period 5 or below it follows that the lower you go on the periodic table, the more likely you are to need a brown colored bottle. Thus, we should choose the element in the lowest period.

I hope this helps!
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