Natural potassium consists of three isotopes. Potassium- 39 is the most abundant, but potassium- 40 and potassium- 41 are present in smaller quantities. Potassium- 40 atoms make up only 0.01 % of the natural potassium, 96 % of natural element consists of potassium- 39 and the remaining percentage is potassium- 4.

i would say b

explanation:

but i think i would need more information than that

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.