28 Questions
What is the common feature of s-block elements?
They have their last electron in the outermost s-orbital
Which group of s-block elements reacts strongly with water to form strongly alkaline hydroxides?
Group 1 elements
Which group of s-block elements, except beryllium, are known as alkaline earth metals?
Group 2 elements
Which of the following alkaline earth metals is the rarest of all elements?
Radium
Which of the following alkali metals is not abundant in nature?
Francium
Which group of s-block elements has the electronic configuration [noble gas]ns2?
Group 2 elements
Which of the following alkali metals has the maximum degree of hydration?
Lithium
What is the general electronic configuration for alkaline earth metals?
[noble gas]ns2
Which group of s-block elements are known as alkaline earth metals?
Group 2
Which of the following is NOT true about alkali metals?
Their ionization enthalpies increase down the group
Which of the following is the rarest of all elements?
Radium
Which of the following is NOT true about monovalent and divalent ions in biological fluids?
They are only found in alkaline earth metals
What is the trend in the atomic and ionic radii of alkali metals as you go down the group?
They increase
Which of the following elements exhibit anomalous properties due to diagonal relationship in the periodic table?
Beryllium
What is the general electronic configuration of alkaline earth metals?
[noble gas]ns2
Which group of s-block elements is known for forming strongly alkaline hydroxides when reacting with water?
Group 1
Which of the following is the rarest of all elements?
Radium
Which s-block element has the maximum degree of hydration?
Lithium
Which group of s-block elements, except beryllium, is known as alkaline earth metals?
Group 2
Which s-block element exhibits anomalous properties similar to magnesium due to diagonal relationship in the periodic table?
Lithium
Which of the following statements about alkali metals is incorrect?
Alkali metals show irregular trends in their physical and chemical properties with increasing atomic number.
What is the general electronic configuration for alkaline earth metals?
[noble gas]ns2
Which group of s-block elements is known for forming strongly alkaline hydroxides when reacting with water?
Group 1 (alkali metals)
Which of the following is NOT an alkaline earth metal?
Sodium
Which of the following alkali metals is the most abundant in the earth's crust?
Sodium
Which of the following statements about francium is true?
It belongs to group 1 of the periodic table.
Which of the following is a result of the diagonal relationship between lithium and magnesium?
Magnesium exhibits anomalous properties similar to beryllium.
Which of the following statements about alkali metals is true?
They have a decreasing degree of hydration with increasing ionic size.
Study Notes
The s-Block Elements of the Periodic Table
- The s-block elements have their last electron in the outermost s-orbital, with two groups (1 & 2) belonging to this block.
- Group 1 elements are known as alkali metals and form strongly alkaline hydroxides when reacting with water.
- Group 2 elements, except beryllium, are alkaline earth metals and have alkaline oxides and hydroxides found in the earth's crust.
- Sodium and potassium are abundant in alkali metals, while calcium and magnesium rank fifth and sixth respectively in abundance in the earth's crust for alkaline earth metals.
- Francium is highly radioactive and radium is the rarest of all elements.
- The general electronic configuration for alkali metals is [noble gas]ns1 and for alkaline earth metals is [noble gas]ns2.
- Lithium and beryllium exhibit anomalous properties similar to magnesium and aluminum, respectively, due to diagonal relationship in the periodic table.
- Monovalent sodium and potassium ions and divalent magnesium and calcium ions are found in large proportions in biological fluids and perform important biological functions.
- Alkali metals show regular trends in their physical and chemical properties with increasing atomic number.
- All alkali metals have one valence electron, ns1, making them the most electropositive metals.
- The atomic and ionic radii of alkali metals increase while going from Li to Cs, and their ionization enthalpies decrease down the group.
- The hydration enthalpies of alkali metal ions decrease with increasing ionic sizes, with Li+ having the maximum degree of hydration and mostly found in hydrated salts.
The s-Block Elements of the Periodic Table
- The s-block elements have their last electron in the outermost s-orbital, with two groups (1 & 2) belonging to this block.
- Group 1 elements are known as alkali metals and form strongly alkaline hydroxides when reacting with water.
- Group 2 elements, except beryllium, are alkaline earth metals and have alkaline oxides and hydroxides found in the earth's crust.
- Sodium and potassium are abundant in alkali metals, while calcium and magnesium rank fifth and sixth respectively in abundance in the earth's crust for alkaline earth metals.
- Francium is highly radioactive and radium is the rarest of all elements.
- The general electronic configuration for alkali metals is [noble gas]ns1 and for alkaline earth metals is [noble gas]ns2.
- Lithium and beryllium exhibit anomalous properties similar to magnesium and aluminum, respectively, due to diagonal relationship in the periodic table.
- Monovalent sodium and potassium ions and divalent magnesium and calcium ions are found in large proportions in biological fluids and perform important biological functions.
- Alkali metals show regular trends in their physical and chemical properties with increasing atomic number.
- All alkali metals have one valence electron, ns1, making them the most electropositive metals.
- The atomic and ionic radii of alkali metals increase while going from Li to Cs, and their ionization enthalpies decrease down the group.
- The hydration enthalpies of alkali metal ions decrease with increasing ionic sizes, with Li+ having the maximum degree of hydration and mostly found in hydrated salts.
The s-Block Elements of the Periodic Table
- The s-block elements have their last electron in the outermost s-orbital, with two groups (1 & 2) belonging to this block.
- Group 1 elements are known as alkali metals and form strongly alkaline hydroxides when reacting with water.
- Group 2 elements, except beryllium, are alkaline earth metals and have alkaline oxides and hydroxides found in the earth's crust.
- Sodium and potassium are abundant in alkali metals, while calcium and magnesium rank fifth and sixth respectively in abundance in the earth's crust for alkaline earth metals.
- Francium is highly radioactive and radium is the rarest of all elements.
- The general electronic configuration for alkali metals is [noble gas]ns1 and for alkaline earth metals is [noble gas]ns2.
- Lithium and beryllium exhibit anomalous properties similar to magnesium and aluminum, respectively, due to diagonal relationship in the periodic table.
- Monovalent sodium and potassium ions and divalent magnesium and calcium ions are found in large proportions in biological fluids and perform important biological functions.
- Alkali metals show regular trends in their physical and chemical properties with increasing atomic number.
- All alkali metals have one valence electron, ns1, making them the most electropositive metals.
- The atomic and ionic radii of alkali metals increase while going from Li to Cs, and their ionization enthalpies decrease down the group.
- The hydration enthalpies of alkali metal ions decrease with increasing ionic sizes, with Li+ having the maximum degree of hydration and mostly found in hydrated salts.
Test your knowledge of the s-block elements of the periodic table with this quiz! From the properties of alkali metals to the electronic configurations of alkaline earth metals, this quiz will challenge you to recall key facts and concepts. Explore the trends in physical and chemical properties of these elements and their importance in biological functions. Whether you're a chemistry student or just interested in learning more about the elements, this quiz is a great way to put your knowledge to the test!
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