Which is a characteristic of the part of the atom marked MA? A. It contains most of the mass. B. It is negatively charged. C. It is mostly empty splice. D. It is composed of electrons.​

What does the term discrediting mean?

These models show the electron structures of two different nonmetal elements. which element is likely more reactive, and why? element 1 is more reactive because it has fewer electron shells and is toward the top of its group on the periodic table. element 1 is more reactive because it has more electrons in its valence shell and is farther to the right on the periodic table. element 2 is more reactive because it does not have a valence shell close to the nucleus, so it will attract electrons. element 2 is more reactive because it does not have a full valence shell, so it will attract electrons.

When an object is heated it contracts. a. true b. false