Question

How does sodium occur in nature? Name the chief ores of sodium.

Solution

Occurrence: Sodium does not occur in nature in the free state due to its very reactive nature. In the combined state, it occurs to the extent of about 2.6% in the earth's crust. The main ores of sodium are:
1. Sodium chloride (NaCl) found as rock salt and in sea water.
2. Sodium nitrite (NaNO₃) or Chile saltpetre.
3. Sodium carbonate (Na₂CO₃)
4. Borax (Na₂B₄O₇ . 10H₂O).

Some More Questions From The s-Block Elements Chapter

Group 1 elements are called alkali metals. Why?

Why caesium can be used in photoelectric cell while lithium can not be?

In aqueous solution, Li⁺ ion has lowest mobility. Why?

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The S-Block Elements

How does sodium occur in nature? Name the chief ores of sodium.

Some More Questions From The s-Block Elements Chapter

Group 1 elements are called alkali metals. Why?

Why caesium can be used in photoelectric cell while lithium can not be?

In aqueous solution, Li⁺ ion has lowest mobility. Why?

Lithium has highest ionisation energy in group 1 elements, yet it is strongest reducing agent. Comment.

The softness of group 1 elements increases down the group with increasing atomic number. Give reason.

Which is the most reactive alkali metal and why?

Why alkali metals do not form M²⁺ions?

Name the radio active element in group 1. How does it resemble with the remaining elements of the group?

Why alkali metals are normally kept in kerosene oil?

Why lithium cannot be stored in kerosene?

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NCERT Sample Papers

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For Daily Free Study Material Join wiredfaculty

The S-Block Elements

How does sodium occur in nature? Name the chief ores of sodium.

Some More Questions From The s-Block Elements Chapter

Group 1 elements are called alkali metals. Why?

Why caesium can be used in photoelectric cell while lithium can not be?

In aqueous solution, Li+ ion has lowest mobility. Why?

Lithium has highest ionisation energy in group 1 elements, yet it is strongest reducing agent. Comment.

The softness of group 1 elements increases down the group with increasing atomic number. Give reason.

Which is the most reactive alkali metal and why?

Why alkali metals do not form M2+ ions?

Name the radio active element in group 1. How does it resemble with the remaining elements of the group?

Why alkali metals are normally kept in kerosene oil?

Why lithium cannot be stored in kerosene?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

In aqueous solution, Li⁺ ion has lowest mobility. Why?

Why alkali metals do not form M²⁺ions?