Typically, for references to data stored in memory on a given system, a reference 6 Symbolic references; 7 References in object oriented languages.

Scientists use them to tell the different elements apart.

There are over 100 elements so it would be confusing to tell them apart without the names.

Scientists can communicate about the elements wherever they are across the globe.

Chemists would not be able to make chemicals and medicines easily if there were no chemical symbols.

Hope this helps.

they are chemical elements

Both are aggregates of elements of the same type. The main difference is that an array allocates elements contiguously thus there is no need to maintain links between the elements; each can be addressed by its offset from the start of the array. A structure, however, allocates elements non-contiguously, and must maintain links (pointers or references) within the elements in order to navigate from one element to the next.

The force that attracts chemical elements to other elements is known as the ionic bond. This will attract and hold chemical elements together.