In your own words, explain the periodic law.

Explanation:

According to the periodic law, elements in a periodic table are arranged according to increasing atomic number and due to this the physical and chemical properties of the elements occur in a systematic order.

For example, elements present in a group will always show similar chemical properties because they tend to have same number of valence electrons.

After a fixed interval there will occur a repetition of properties.

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.