The radius of a carbon atom is 7 x 10^-11m and the mass is 1.994 x 10^-23g. What is the density of the carbon atom?

Which is true of chemicals? a. things containing chemicals always cost a lot of money. b. chemicals are never dangerous. c. chemicals are in many substances in a home. d. chemicals are rarely found on earth.

In pqr m< p=60 m< q= 30 and m

How many energy levels contain electrons in an atom of zirconium (zr)?