Water has high surface tension due to extremely high molecular binding force of water caused by the hydrogen bond between water molecules. But water is not the last winner. Mercury, which is commonly known as quicksilver and was formerly named hydrargyrum (from Greek "hydr-" water and "argyros" silver), has stronger surface tension than water. Being a heavy, silvery d-block element, mercury is the only metal that is liquid at standard temperature and pressure conditions. Why does mercury have stronger surface tension than water?