Question

what are elements give two examples

Answer 1

Hii machiii ✋..

➡️ elements include oxygen, hydrogen, sodium, chlorine, lead, iron.

Examples of compounds include water ( or hydrogen oxide ) H2O; and Sodium Chloride, NaCl. H is the symbol for hydrogen; the number 2 as used here means there are 2 atoms of the element hydrogen in every molecule of the compound water.

For example, element 1 is hydrogen, element 2 is helium, element 3 is lithium, element 8 is oxygen, etc.

Answer 2

An element is a substance whose atoms all have the same number of protons: another way of saying this is that all of a particular element's atoms have the same atomic number.
Ex. hydrogen, oxygen