All elements are made up of atoms. ➢ Atoms are made up of protons, neutrons, and electrons. Two different kinds of atoms can combine to form a compound. A molecule is a combination of atoms that cannot be broken apart while still retaining the same properties as the larger substance that it is a part of.
<span>pb(no3)2 + 2 nacl → pbcl2 + 2nano3</span>
Out of the choices given, the part of the atom that forms chemical bonds are the outermost electrons. The correct answer is B.
