Which number indicates the energy level of an atom's valence electrons? O A. The period number
O B. The group number
O c. The atomic number
O D. The mass number

For the following dehydrohalogenation (e2) reaction, draw the zaitsev product(s) resulting from elimination involving c3–c4 (i.e., the carbon atoms depicted with stereobonds). show the product stereochemistry clearly. if there is more than one organic product, both products may be drawn in the same box. ignore elimination involving c3 or c4 and any carbon atom other than c4 or c3.

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

Name the element in group 17, period 2. (periodic table)