Which element has electrons in three energy levels?

A. B
B. Li
C. Si
D. SC

How have the greenhouse gasses increased from the year 2000 to 2018

Give the set of reactants (including an alkyl halide and a nucleophile) that could be used to synthesize the following ether: draw the molecules on the canvas by choosing buttons from the tools (for bonds and charges), atoms, and templates toolbars, including charges where needed. ch3ch2och2ch2chch3 | ch3

Which of the following is not one of the steps in the scientific method a. hypothesize b. summarize c. analyze d. familiarize