Write the symbols of any 10 element. why is a symbol needed

Boron B

Symbols allow people to go beyond what is known or seen by creating linkages between otherwise very different concepts and experiences. ... Symbols take the form of words, sounds, gestures, ideas, or visual images and are used to convey other ideas and beliefs.

Thats my thought though.

hope this

explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)