The radius of a palladium atom is 137 pm. how many palladium atoms would have to be laid side by side to span a distance of 4.25 mm?

atoms of palladium are to be laid side by side to span a distance of  4.25 mm.

Explanation:

The radius of the palladium atom, r = 137 pm

Diameter of the palladium atom = 2r =  137 pm = 274 pm

Let the number of palladium atoms laid side by side be x

Length of the chain = 4.25 mm =

atoms of palladium are to be laid side by side to span a distance of  4.25 mm.

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.