Mr. Adams asked his students to write the chemical symbol for the element zinc. He wrote the students’ answers on the whiteboard. Which answer is correct? A.
zn
B.
Zn
C.
ZN
D.
zN

Aneutron and a proton combine to form a nucleus. why does the mass of the nucleus differ from the sum of the masses of the individual nucleons?

Pls pls pls pls ! describe, in your own words, how you found the epicenter of the earthquake.

The experiment was repeated many years later but the gases were mixed in a different type of container. a white solid was obtained which was xenon fluoride. predict whether you think 1) krypton and 2) radon will react with fluorine. explain reasons for your predictions