Element Properties: Non-Alkaline Analysis
The question asks to identify which element among the given options is not alkaline. Alkalinity is typically associated with substances that produce hydroxide ions (OH⁻) in solution, often metal oxides or hydroxides.
-
Sodium (Na): This is an alkali metal. When it reacts with water, it forms sodium hydroxide (NaOH), which is a strong base (alkali).
The reaction is:
$2 Na + 2 H₂O → 2 NaOH + H₂$
-
Potassium (K): This is also an alkali metal. Its reaction with water produces potassium hydroxide (KOH), another strong base.
The reaction is:
$2 K + 2 H₂O → 2 KOH + H₂$
-
Lithium (Li): This alkali metal reacts with water to form lithium hydroxide (LiOH), which is alkaline.
The reaction is:
$2 Li + 2 H₂O → 2 LiOH + H₂$
-
Sulphur (S): Sulphur is a non-metal. Non-metals typically form acidic oxides. For example, sulfur dioxide (SO₂) and sulfur trioxide (SO₃) react with water to form sulfurous acid (H₂SO₃) and sulfuric acid (H₂SO₄), respectively. These are acidic, not alkaline.
The reactions are:
$SO₂ + H₂O → H₂SO₃$
$SO₃ + H₂O → H₂SO₄$
Therefore, Sulphur is the element that is not alkaline.
Similar Questions
- What element is a greenish yellow gas with a characteristic smell at room temperature?
- In the periodic table, as one goes down the group, which property doesn't change?
- Which of the following is a copper ore?
- Which scientist invented the Periodic table?
- The current Secretary General of United Nations Antonio Guterres belongs to:
Why do noble gases exist as gases at room temperature, while halogens exist as solids, liquids, or gases down the group?
Which factors are responsible for the increase in metallic character down a group in the periodic table?
- What is the densest substance on Earth?
- The Law of Octaves' was proposed by:
- Which of the following is a property of metalloids?
Important Questions from Classification of Elements and Periodicity in Properties
What is the valency of Lithium?
The maximum number of electrons that can be accommodated in the outermost orbit is _______.
If the atomic size increases, the nonmetallic character will
State the electronic configuration of Argon.
The ore of aluminium ‘bauxite’ is:
