Classify each of the following molecules as purely covalent, non-polar covalent, polar covalent,
or ionic, using electronegativity value differences and the criteria listed in the Introduction:
Br2
СО
MgS
LiBr
BeO
KCI
CCI4
BaO
CaO HI

Which best describes how johannes kepler developed his laws of planetary motion

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?

According to le chatelier’s principle, a system in chemical equilibrium responds to stress by shifting the equilibrium in a direction that reduces the stress. normalizes the stress. increases the stress. changes the stress.