In the development of atomic models, it was realized that the atom is mostly empty. consider a model for the hydrogen atom where its nucleus is a sphere with a radius of roughly 10−15 m, and assume the electron orbits in a circle with a radius of roughly 10−10 m. in order to get a better sense for the emptiness of the atom, choose an object and estimate its width. this object will be your "nucleus". how far away would the "electron" be located away from your "nucleus"?

See below

Explanation:

Lets choose a baseball ball which has to have a minimum of  diameter of 1.43 inches ( 1.43 in x 2.54 cm/in = 3.63 cm )

ratio electron/nucleus =  10−10 m / 10−15 m = 100000

distance "e" = 3.63 cm x 100000 = 363000 cm ( 3630 m or 3.630 km )

Imagine to bat a baseball 3.6 km away !

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.

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