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

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.

What’s the theoretical yield of solid lead