Consider the following statements regarding the modern periodic table : 1. Elements in group 16 are also known as chalcogens Which of the statements given above is/are correct?
2. Elements in groups 3-12 are known as $p$-block elements
3. The $f$-block elements are also known as inner transition elements
4. Elements of groups 13-18 are known as transition elements
5. Elements in group 2 are also known as alkaline earth metals
Periodic Table Statements Analysis
This solution explains the accuracy of five statements concerning the modern periodic table. We will analyze each statement individually to determine which ones are correct.
Statement 1: Chalcogens Identification
Statement: Elements in group 16 are also known as chalcogens.
Analysis: This statement is correct. Group 16 elements, including Oxygen (O), Sulfur (S), Selenium (Se), Tellurium (Te), Polonium (Po), and Livermorium (Lv), are commonly referred to as the chalcogens.
Statement 2: $p$-block Elements Misconception
Statement: Elements in groups 3-12 are known as $p$-block elements.
Analysis: This statement is incorrect. The elements found in groups 3 through 12 of the periodic table are known as the $d$-block elements, which are the transition metals. The $p$-block elements are typically located in groups 13 to 18.
Statement 3: $f$-block Elements Naming
Statement: The $f$-block elements are also known as inner transition elements.
Analysis: This statement is correct. The $f$-block elements, comprising the lanthanide and actinide series, are positioned below the main body of the periodic table and are recognized as the inner transition elements.
Statement 4: Transition Elements Misconception
Statement: Elements of groups 13-18 are known as transition elements.
Analysis: This statement is incorrect. Elements in groups 13-18 constitute the $p$-block. The term "transition elements" specifically refers to the $d$-block elements (groups 3-12) and sometimes includes the $f$-block elements.
Statement 5: Alkaline Earth Metals Identification
Statement: Elements in group 2 are also known as alkaline earth metals.
Analysis: This statement is correct. Group 2 elements, such as Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), Barium (Ba), and Radium (Ra), are known as the alkaline earth metals.
Conclusion: Correct Statements
Based on the analysis of each statement:
- Statement 1 is correct.
- Statement 2 is incorrect.
- Statement 3 is correct.
- Statement 4 is incorrect.
- Statement 5 is correct.
Therefore, the correct statements are 1, 3, and 5.
Summary Table
| Statement Number | Statement Content | Correctness |
|---|---|---|
| 1 | Elements in group 16 are also known as chalcogens | Correct |
| 2 | Elements in groups 3-12 are known as $p$-block elements | Incorrect |
| 3 | The $f$-block elements are also known as inner transition elements | Correct |
| 4 | Elements of groups 13-18 are known as transition elements | Incorrect |
| 5 | Elements in group 2 are also known as alkaline earth metals | Correct |
The combination of correct statements is 1, 3, and 5.
Important Questions from Periodic properties
- Which one of the following represents the correct order of boiling point among Li, Be, B and Zn ?
The correct group, period and block for element Hassium (Hs) is
(Given : atomic number of Hs = 108)- Which one of the following statements regarding general properties of $s$, $p$, $d$ and $f$-block elements is NOT correct?
Which of the following order(s) of ionic radii is/are correct?
1. $O^{2-} < S^{2-} < Se^{2-} < Te^{2-}$
2. $Ti^{2+} < Ti^{3+} < Ti^{4+}$
3. $O^{2-} < F^{-} < Na^{+} < Mg^{2+}$Select the answer using the code given below :
- Which one of the following is the correct value of the effective nuclear charge ($Z_{eff}$) for the $3d$ electron of chromium?
