Question

by taking example of magnesium. 42. What is difference between sodium atom and sodium ion? (Any two points) 43. Write the value of charge on electron. 44. Define mass number.​

Answer 1

Explanation:

• Sodium atom Na has 11 electrons, in order to complete octave, it loses its one electron and forms sodium ion.
• The sodium atom has 11 electrons and the sodium ion has 10 electrons.
• Sodium atom = Na, sodium ion = Na⁺

• Charge on electron = 1.6021 × 10⁻¹⁹

• Mass number: Total number of neutrons and protons present in the atom is called mass number.