1 The numbers of subatomic particles present in four species W, X, Y and Z are given in the table.
Species
Number of protons
Number of
neutrons
Number of
electrons
W
19
20
18
х
19
20
19
Y
20
20
18
z
20
22
20
Which of these species are isotopic?
A W and X
B W and Y
C X and Z
D Y and Z

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.

Suppose a lab group reports a ppercent yield of sand of 105. is it really possible to collect more sand than was originally represented? what is the possible explanation for the extra product?

Use this information to determine the number of calends electrons in the atoms. which of the following correctly compares the stability of the two atoms? a) both are unreactive b) both are highly reactive c) a is unreactive and d is reactive d) a is reactive and d is unreactive