Inorganic Chemistry - Block Elements

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Q1. What is the trend in atomic radius as you move down the alkali metal group? (2022)

Solution:

The atomic radius increases as you move down the alkali metal group due to the addition of electron shells.

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Q2. What is the color of the flame produced by burning strontium salts? (2023)

Solution:

Strontium salts produce a red flame when burned.

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Q3. Which of the following alkaline earth metals is the least reactive? (2022)

Solution:

Magnesium (Mg) is the least reactive among the alkaline earth metals due to its higher ionization energy compared to the others.

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Q4. Which of the following is the most abundant alkaline earth metal in the Earth's crust? (2019)

Solution:

Calcium (Ca) is the most abundant alkaline earth metal in the Earth's crust.

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Q5. What is the color of the flame produced by lithium salts? (2019)

Solution:

Lithium salts produce a red flame when burned.

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Q6. Which of the following elements has the highest ionization energy in the alkali metal group? (2023)

Solution:

Lithium (Li) has the highest ionization energy among the alkali metals due to its smaller atomic size.

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Q7. What is the common oxidation state of aluminum in its compounds? (2020)

Solution:

Aluminum commonly exhibits an oxidation state of +3 in its compounds.

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Q8. Which of the following elements is a member of the alkaline earth metals? (2021)

Solution:

Calcium is a member of the alkaline earth metals, which are found in Group 2 of the periodic table.

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Q9. What is the common oxidation state of iron in Fe2O3? (2019)

Solution:

In Fe2O3, iron has a common oxidation state of +3.

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Q10. Which of the following is the lightest alkaline earth metal? (2019)

Solution:

Beryllium (Be) is the lightest alkaline earth metal.