An isotope of cesium (cesium-137) has a half-life of 30 years. If a 1.0 mg sample of cesium-137 disintegrates over a period of 90 years, how many mg of cesium-137 would remain

What happens when an atom of sulfur combines with two atoms of chlorine to produce sci2? a. each chlorine atom shares a pair of electrons with the sulfur atom. b. an electron is transferred from each chlorine atom to the sulfur atom. c. an electron is transferred from the sulfur atom to each chlorine atom. d. each chlorine atom shares all its valence electrons with the sulfur atom.

Astudent conducts an experiment to determine how the amount of water given to a plant affects its growth. what is the independent variable for this experiment?

What atom has the largest atomic radius