Density of alkaline earth metals order

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The correct option is DCa <Mg<Be<SrThe explanation for the correct option:Option (D): Ca<Mg<Be<SrDensity is defined as the ratio between mass and volume or mass per unit volume.The periodic table does not have a clearly defined density trend because the densities do not follow a consistent pattern in relation to any element properties.The force of attraction in group 2elements is proportional to the element's size. As the size of the element grows larger, the volume of the atom increases, and the density decreases.The molecular mass of the bottom elements is now quite large in comparison to their volume, and the density is increasing due to the strong attraction force.Therefore, for moving down the group the density decreases first and then increases. Hence, it is the correct optionThe explanation for the incorrect option:Option (A): Be>Mg>Ca>SrFor moving down the group the density decreases first and then increases as there is no specific trend for density. Strontium is the last element among the group of Be, Mg, Ca and Sr Hence it will have a high density.Therefore, it is an incorrect option.Option (B):Ca>Mg>Be>SrAs there is no specific trend in the periodic table for density, the density decreases from Beryllium to Magnesium and then increases from Calcium to Strontium.Strontium having the highest molecular mass will have a high density.Hence, it is an incorrect option.Option (C): Mg<Ca<Sr<BeThe volume of the atom increases as the size of the element grows larger, while the density decreases. The density of the bottom elements is increasing due to the strong pull force, and their molecular mass is now fairly enormous in contrast to their volume.Beryllium will have a density less than Strontium as its molecular mass is less than Strontium. Also, from Beryllium to magnesium density decreases and then increases from Calcium to Strontium. Hence. it is an incorrect option.Therefore, the correct order of density of the following elementsBe, Mg,Ca,Sr is Ca<Mg<Be<Sr, option (D) is the correct answer.
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Solution

The correct option is DCa <Mg<Be<SrThe explanation for the correct option:Option (D): Ca<Mg<Be<SrDensity is defined as the ratio between mass and volume or mass per unit volume.The periodic table does not have a clearly defined density trend because the densities do not follow a consistent pattern in relation to any element properties.The force of attraction in group 2elements is proportional to the element's size. As the size of the element grows larger, the volume of the atom increases, and the density decreases.The molecular mass of the bottom elements is now quite large in comparison to their volume, and the density is increasing due to the strong attraction force.Therefore, for moving down the group the density decreases first and then increases. Hence, it is the correct optionThe explanation for the incorrect option:Option (A): Be>Mg>Ca>SrFor moving down the group the density decreases first and then increases as there is no specific trend for density. Strontium is the last element among the group of Be, Mg, Ca and Sr Hence it will have a high density.Therefore, it is an incorrect option.Option (B):Ca>Mg>Be>SrAs there is no specific trend in the periodic table for density, the density decreases from Beryllium to Magnesium and then increases from Calcium to Strontium.Strontium having the highest molecular mass will have a high density.Hence, it is an incorrect option.Option (C): Mg<Ca<Sr<BeThe volume of the atom increases as the size of the element grows larger, while the density decreases. The density of the bottom elements is increasing due to the strong pull force, and their molecular mass is now fairly enormous in contrast to their volume.Beryllium will have a density less than Strontium as its molecular mass is less than Strontium. Also, from Beryllium to magnesium density decreases and then increases from Calcium to Strontium. Hence. it is an incorrect option.Therefore, the correct order of density of the following elementsBe, Mg,Ca,Sr is Ca<Mg<Be<Sr, option (D) is the correct answer.

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Alkaline Earth Metals

Write the order of density of ...

Updated On: 27-06-2022

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Answer

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30692679

2.6 K

1:38

The alkaline earth metal with least density is

141181458

5.2 K

1:38

The alkaline earth metal with least density is

30692617

400

2:37

The alkaline earth metal which has the least density is

69097467

3.6 K

2:37

The alkaline earth metal which has the least density is

42363893

6.5 K

The densities of transition metals are greater than <br> the alkali and alkaline earth metals. Justify.

643653391

6.5 K

3:36

The densities of alkaline earth metals are much smaller than those of alkali metals.

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What is the most dense alkaline earth metal?

Properties of Alkaline Earth Metals Calcium is the lightest, and radium is the densest. Magnesium and calcium are quite abundant in both the earth's crust and in sea water.