Figure 2.2 -Refer to Figure 2.2 (First Three Rows of the Periodic

question 56

Multiple Choice

Figure 2.2
-Refer to Figure 2.2 (first three rows of the periodic table) .If life arose on a planet where carbon is absent,which element might fill the role of carbon in compounds essential to life?

• A)boron
• B)silicon
• C)nitrogen
• D)aluminum
• E)phosphorus

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