A Sulfur Atom Has a Larger Atomic Radius Than an Oxygen
A sulfur atom has a larger atomic radius than an oxygen atom. Which statement best explains why?
A)Sulfur contains more electrons than oxygen does.
B)Sulfur contains more protons than oxygen does.
C)The valence shell of sulfur is farther away from the nucleus than the valence shell of oxygen is.
D)The larger number of protons in an oxygen atom pulls its electrons closer to the nucleus than a sulfur atom.
Zirconium (Zr)is an element classified as a metal. Which property cannot be assumed based on its classification as a metal?
A)Zr has a relatively high density
B)Zr is a trace element in the body
C)Zr is a good conductor of electricity
D)Zr is a shiny solid
Protons and electrons reside in the nucleus of an atom.
Electrons are negatively charged and have the smallest mass of the three subatomic particles.