Perera,K. Sarath D2025-02-032025-02-032021-04https://dr.ichemc.ac.lk/handle/123456789/71Student Corner Page 59-62An atom consists of a very small (about 10–10 m in radius), dense and positively charged nucleus and negatively charged electrons. The nucleus consists of protons (p) and neutrons (n); these two particles are collectively known as nucleonsenRadiochemistryArticle