In the sentence ätoms of a certain element have a definite structure", which word is the closest in meaning to structure?
a)arrangement
b) size
c) property
d density

In the sentence “Atoms of a certain element have a definite structure", the closest in meaning to structure is arrangement.

Option A

Explanation:

Each and every elements are made up of a blocks of atoms. So, atoms are termed as the building blocks of elements. Depending upon the number of atoms present in elements and their occupancy in a given volume we can determine the density of each element.

This the reason that each element has its own unique density. The given statement meant that atoms are arranged differently at different positions in different elements. Thus, in this case, structure is closely related to the meaning of arrangement of atoms in every element.