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Group 1 Elements (The Alkali Metals) Quiz

10 Questions

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Group 1 Elements (The Alkali Metals) Quiz

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Questions and Answers

Which statement about the properties of alkali metals is true?

They react vigorously with water and most non-metals.

They have high ionization energies and decrease down the group.

They are the least electropositive metals.

They have low melting points and decrease down the group. (correct)

What is the characteristic flame color produced by alkali metals heated in a Bunsen flame?

Blue

Green

Yellow (correct)

Red

Which alkali metal reacts the least with air at room temperature?

Potassium (K)

Sodium (Na)

Lithium (Li) (correct)

Rubidium (Rb)

What irregularity is found with Lithium, the first member of the group, regarding its compounds?

Formation of stable higher oxides by Lithium compared to other alkali metals. (B) Signup and view all the answers

Why is lithium hydride more stable than the hydrides of other alkali metals?

It has a higher polarising power for anions. (A) Signup and view all the answers

Which of the following Group 1 elements has the highest atomic weight?

Cesium (Cs) (B) Signup and view all the answers

Among the Group 1 elements, which one has the highest ionic radius?

Caesium (Cs) (A) Signup and view all the answers

Which Group 1 element has the lowest boiling point?

Lithium (Li) (B) Signup and view all the answers

Which of the following Group 1 elements has the highest density?

Caesium (Cs) (A) Signup and view all the answers

Which Group 1 element has the highest standard electrode potential?

Lithium (Li) (B) Signup and view all the answers

Study Notes

Properties of Alkali Metals

A characteristic flame color is produced when alkali metals are heated in a Bunsen flame.
The reactivity of alkali metals with air at room temperature varies, with one metal reacting the least.

Irregularities of Lithium

Lithium, the first member of the group, exhibits an irregularity in its compounds.

Stability of Lithium Hydride

Lithium hydride is more stable than the hydrides of other alkali metals.

Atomic Weight and Ionic Radius of Group 1 Elements

The Group 1 element with the highest atomic weight is identified.
The Group 1 element with the highest ionic radius is identified.

Physical Properties of Group 1 Elements

The Group 1 element with the lowest boiling point is identified.
The Group 1 element with the highest density is identified.

Electrochemical Properties of Group 1 Elements

The Group 1 element with the highest standard electrode potential is identified.

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Description

Test your knowledge about the properties, electronic configurations, and characteristics of Group 1 elements, also known as the Alkali metals. This quiz covers elements like Lithium, Sodium, Potassium, Rubidium, Caesium, and Francium.