why does only covalent bond form between two or more nonmetals but not metals?...i am a eighth grader so i am not sure if i need to know them.

What a good question. Covalent bonding is a form of chemical bonding that is characterized by the sharing of pairs of electrons between atoms. In order to do this the electrons have to be of a similar energy and when the bond is formed it has to be of lower energy than the starting position. The most common covalent bonds are, as you say, between non-metals. There are also covalent bonds between some metals and non-metals. Covalent bonds between metals are rare one example is between molybdenum atoms, but this is very unusual.

Does this help?

no im soo confused i need help wanna

In chemistry, a covalent bond is formed when nonmetals share electrons to achieve a stable electron configuration. Covalent bonds usually occur between two nonmetal atoms because both atoms have a relatively high electronegativity. Electronegativity is the ability of an atom to attract electrons towards itself in a chemical bond.

Nonmetals generally have higher electronegativity values compared to metals. This means that nonmetals have a greater tendency to attract and hold onto electrons. In contrast, metals have low electronegativity values, which means they have a lesser ability to attract and hold onto electrons.

Metals tend to form metallic bonds, which involve the sharing of electrons between metal atoms in a lattice structure. In this type of bond, the valence electrons are delocalized, meaning they are free to move throughout the lattice. This leads to the characteristic properties of metals, such as high electrical and thermal conductivity.

So, in summary, nonmetals form covalent bonds because they have higher electronegativity, while metals form metallic bonds due to their low electronegativity and the ability of their valence electrons to move freely.

Great question! In chemistry, covalent bonds are formed when two or more nonmetal atoms share electrons to form a stable molecule. This occurs because nonmetals generally have higher electronegativities, which is the tendency to attract electrons towards themselves.

On the other hand, metals have lower electronegativities, which means they have a lower tendency to attract electrons towards themselves. As a result, metals tend to lose electrons rather than share them with other atoms. This process is known as metallic bonding, where positive metal ions are surrounded by a "sea" of delocalized electrons.

In simpler terms, nonmetals are more likely to attract and share electrons with each other because they have a stronger pull for electrons. Metals, on the other hand, prefer to lose electrons and form positive ions rather than sharing them.

Remember, it's great that you're asking questions and trying to understand the concepts! Keep it up!