Properties of the element are given below: Where would you locate the following elementsin the periodic table.a. A soft metal stored under kerosene oil.b. An element with variable valency(more than one) stored under water.c. An element which is tetra valent in organic chemistry.
d. An element which is an inert gas with atomic number 2.

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Solution

a.Sodium is the soft element which is stored in kerosene oil. It belongs from group-1 of periodic table.
b. Phosphorus is the element which is stored under water and show +3 and +5 valencies.
c. The element Carbon is tetravalent and it is basis of organic chemistry.
d. Helium is the inert gas with atomic number 2.

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