Question

Why is it not possible to form ${\mathrm{Na}}^{+2}$ ion? Explain with respect to periodic properties.

Answer 1

• Sodium element has atomic number 11.
• Its electronic configuration is 2, 8, 1.
• Thus, Sodium has a high tendency to donate one electron and form ${\mathrm{Na}}^{+}$ ion.
• After the removal of one electron Sodium acquires the stable noble gas configuration similar to Neon.
• Due to which second ionization potential is quite high. That is why, ${\mathrm{Na}}^{+2}$ ion is not possible.