Question

name the non metal which is placed above the alkali metals in the modern periodic table
1)hydrogen
2)helium
3)Boron
4)oxygen ​

Answer 1

Dear Student,

◆ Answer - (1) Hydrogen

Non-metal which is placed above the alkali metals in the modern periodic table is hydrogen.

● Explaination -

Alkali metals are placed in 1st group of modern periodic table. Hydrogen is placed in 1st period above all alkali metals in 1st group of modern periodic table.

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Answer 2

Hydrogen is placed above the alkali metals in the ‘modern periodic table’.

Option: (1)

Explanation:  

• The alkali metals are compounds like Sodium, Potassium, and Lithium. In the ‘modern periodic table’, hydrogen is placed above Lithium in the period of alkali metal.  

• This is because just similar to hydrogen, all the other alkali metal have one electron excess of their stable state.  

• In addition to this the alkali metal form unipositive cations similar to the hydrogen ion.  

• Hence hydrogen in spite of being a non-metal is group together with the alkali metal in the modern periodic table due to the anomalous property of hydrogen.

Learn more about Hydrogen

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