Which is a property of covalent compounds? They ionize in solution. They tend to be very hard. They have a low boiling point. They have a high melting point.

The p sub shell can hold up to 8 electrons in an atom. true or false?

In the 1800s, one of the statements in john dalton's atomic theory was that atoms are indivisible. later experimental evidence led to the discovery of subatomic particles such as neutrons, electrons, and protons. what happened to the indivisible atom part of dalton's atomic theory, and why?

What layer of the atmosphere is directly above the troposphere?