ATOMIC STRUCTURE AND CHEMICAL Engineering
ATOMIC STRUCTURE AND CHEMICAL Engineering Protons Protons are positively charged subatomic particles. The charge of a proton is 1e, which corresponds to approximately 1.602 × 10 -19 The mass of a proton is approximately 1.672 × 10 -24 Protons are over 1800 times heavier than electrons. The total number of protons in the atoms of an element is always equal to the atomic number of the element. Neutrons The mass of a neutron is almost the same as that of a proton i.e. 1.674×10 -24 Neutrons are electrically neutral particles and carry no charge. Different isotopes of an element have the same number of protons but vary in the number of neutrons present in their respective nuclei. Electrons The charge of an electron is -1e, which approximates to -1.602 × 10 -19 The mass of an electron is approximately 9.1 × 10 -31 . Due to the relatively negligible mass of electrons, they are ignored when calculating the mass of an atom. THE END 🔚 ...