Question

Why does beryllium form BeCl₂although it has no unpaired electrons?

Solution

Be(Z = 4) which has electronic configuration 1s² 2s² shows electronic configuration of 1s² 2s¹ 2px¹ in excited state and one s-orbital (2s) and one p-orbital (2p) can intermix to form two sp hybrid orbitals which can be used to form BeCl₂.

Some More Questions From The s-Block Elements Chapter

Why are alkali metals not found in nature?

Lithium shows similarities to magnesium in the chemical behaviour. What is the cause of this similarity?

What is the nature of lithium compounds?

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The S-Block Elements

Why does beryllium form BeCl₂although it has no unpaired electrons?

Some More Questions From The s-Block Elements Chapter

Why are alkali metals not found in nature?

Lithium shows similarities to magnesium in the chemical behaviour. What is the cause of this similarity?

What is the nature of lithium compounds?

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?

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The S-Block Elements

Why does beryllium form BeCl2 although it has no unpaired electrons?

Some More Questions From The s-Block Elements Chapter

Why are alkali metals not found in nature?

Lithium shows similarities to magnesium in the chemical behaviour. What is the cause of this similarity?

What is the nature of lithium compounds?

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?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Why does beryllium form BeCl₂although it has no unpaired electrons?

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

Why alkali metals do not form M²⁺ions?