The middle or center of the atom is called the

What monatomic ions do selenium (z = 34) and phosphorus (z = 15) form? (type your answer using the format [cu] + for cu + and [cu]2 + for cu2+.) ?

Determine the molecular formula of a compound with an empirical formula of NH2 and a formula mass of 32.06 amu

Which metal is not required to have its charge specified in the names of ionic compounds it forms?

Which of the following apply to the property of hardness. Select all that apply. Hardness is determined through a complicated process that requires expensive instruments. Hardness is a physical property.

Write 126.7 g in scientific notation

Make inferences about what you think would happen to other living things, such as plants and animals, in an area exposed to nuclear radiation.

What are the three particles of an atom

Which of these are the largest? asteroids, comets, meteors, or are they all the same size?

A) the ka for acetic acid (h3cco2h) is 1.737 * 10-5. what is the pka for this acid? b. use the pka calculated above to determine the ph at which [h3cco2h]=[h3cco2-].

Suppose you take a piece of hard wax from an unlit candle. After you roll the wax between your fingers for a while, it becomes soft. What State of matter is the softer wax? Is it possible for wax to change without changing state