covalent bonds

• Nonpolar covalent: share electrons equally

  ● is the nucleus of each atom.

  blue is the cloud of electrons shared equally between the two atoms

  
• Polar covalent: share electrons unequally

  Because there’s less electrons around this nucleus, there is a slight positive charge (δ+) on this nucleus

  Because electrons have a negative charge, there’s more electrons around this nucleus, there’s a slight negative charge (δ−) on this nucleus.

  ● this nucleus has more pull on electrons - bigger electron cloud surrounding it.