What is meant by an atomic symbol? Write the atomic symbols of chlorine and copper.
Answer:
Atomic symbol:
For example:
Name the three subatomic particles of an atom. Write their symbols and charges.
Chlorine is an element of atomic number 17. It is a mixture of two isotopes having mass numbers of 35 and 37.
(i) What is meant by “atomic number of an element”?
(ii) What do you understand by an 'atom'?