Carbon
The atoms are the same. In a liquid, the forces between atoms are stronger.
the atom is an isotope
The answer expected here is non-metal, and examples are carbon, chlorine, sulfur phosphorus. Metals have metallic bonds. However there are compounds where atoms of a metallic element form covalent bonds to other atoms of the same element.
They share electrons. Atoms of the same or similar electronegativity will share electrons, and two atoms of the same type will of course have the same electronegativity. Also, two atoms joined together form a molecule, not an atom.
This atom is called isotope.
Not always. Some atoms of the same element with different numbers of neutrons are radioactive, whereas the other atoms are not.
No, oxygen atoms are all the same. Each oxygen atom has 8 protons in its nucleus and is chemically identical to every other oxygen atom.
You have a misconception about chemical bonding. Electrons do not form bonds with other electrons. As you will recall from Coulomb's Law, electrons repel other electrons since they all have the same negative charge, and like charges repel, while opposite charges attract. So it is the oppositely charged protons to which electrons are attracted. Since atoms contain both protons and electrons, atoms bond with other atoms because the electrons in one atom can be attracted to the protons in a different atom. And there are various types of bonding between atoms. These include ionic, covalent, and metallic.
this is actually possible . this is because it will form an ionic bond will result a complete transfer of valence electrons from one atom to the other resulting in two ions with opposite charges
An isotope
an isotope
An isotope.