Which electron in an atom (Z=17) is the most shielded from nuclear charge?
A. an electron in the 2s
B. an electron in the 3p
C. an electron in the 3d
D. an electron in the 1s

Much of the general structure and physical properties of the interior of the earth are inferred from: a)deep oil and gas bore holes b)geologic investigations c)analysis of seismic waves d) study of volcanoes

The drawing represents the movement of particles in a substance. what changes of state can this substance undergo

What is a property of a double replacement reaction