They have less mass; and depending on how you define their "size", they also have less size.
All of them. Except the noble gases.
All atoms are neutral because the positive and negative charges within the atom are equal. The number of protons (+) and the number of electrons (-) are the same. Ions are atoms with a positive or negative charge. A cation is a positively charged atom with less electrons than protons. An anion is a negatively charged atom with more electrons than protons.
Atom that are anions have two more electrons than it has in protons.
Polar bonds exist because certain atoms have a greater pull on the electrons in a bond than other atoms. The ability of an atom to attract electrons in a covalent bond is called "electronegativity". Atoms with a greater electronegativity will have a greater pull on the electrons in a bond than atoms with lower electronegativities. What this means for an electron is that it is not "shared" all that fairly. It will spend more time on the more electronegative atom than it will on the less electronegative atom (to a degree proportional to the difference in their electronegativity).
Your body is made of molecules which are made of atoms. All atoms have electrons.
All atoms have electrons, but not in the nucleus.
all charged particles are ions. cations are positive meaning they have more protons than electrons. anions are negative meaning they have more electrons than protons
All atoms have neutrons, protons and electrons.
When the central atom of a molecule has unshared electrons, the bond angles will be less than the ideal angles for a given molecular geometry. This is because the unshared electrons create additional repulsion, pushing the bonded atoms closer together and reducing the bond angles.
Electrons are present in all types of matter because they are fundamental particles that make up atoms. Atoms are the building blocks of matter, and electrons orbit the nucleus of an atom. Therefore, electrons are found in all types of matter, whether it be solids, liquids, or gases.
the electrons on their outer shell, all atoms want to gain a full valence shell.
If there are more protons than electrons there is a positive charge. If there is more electrons than protons there is a negative charge.