Question

Properties of the elements are given below. Where would you locate the following elements in the periodic table?

A soft metal stored under kerosene

Answer 1

A soft metal stored under kerosene:

• Alkali metals are soft and highly reactive toward the air and moisture.
• Sodium is a soft metal and it is stored under kerosene due to its highly reactive nature.
• The atomic number of Sodium is 11 and the electronic configuration is $1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^{6}3{\mathrm{s}}^1$
• Sodium is an alkali metal in the third period and belongs to group 1.

Therefore, sodium is a soft metal stored under kerosene and located in the third period and belongs to group 1.