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Without looking at the periodic table, s...

Without looking at the periodic table, select the elements belonging to same from the following list.

A

`Z = 12, 38, 4, 88`

B

`Z =9,16,3,35`

C

`Z=5,11,27,19`

D

`Z=24,47,42,55`

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The correct Answer is:
To determine which elements belong to the same group from the given list, we can follow these steps: ### Step-by-Step Solution: 1. **Identify the Elements**: First, we need to identify the atomic numbers of the elements provided in the question. Let's assume the elements are represented by their atomic numbers. 2. **Sort the Atomic Numbers**: Arrange the atomic numbers in ascending order to analyze their periodicity. 3. **Apply the Magic Number Rule**: The magic numbers for the periodic table are 2, 8, 8, 18, 18, and 32. We will use these numbers to determine the periods of the elements: - The first period has 2 elements (1s orbital). - The second and third periods have 8 elements each (2s and 2p orbitals). - The fourth and fifth periods have 18 elements each (3s, 3p, and 3d orbitals). 4. **Determine the Periods**: - For the smallest atomic number, identify its period. - Add the corresponding magic number to find the next element in the same group. - Continue this process to find the elements that fit the magic number pattern. 5. **Check Each Option**: Repeat the above steps for each option provided in the question to determine which set of elements belongs to the same group. 6. **Select the Correct Option**: After analyzing all options, select the one where all elements fit the magic number pattern. ### Example Application: Suppose we have the following atomic numbers: 4, 12, 38, and 88. - **Sort**: 4, 12, 38, 88 - **Identify Periods**: - 4 (2nd period) - 12 (3rd period, 4 + 8) - 38 (4th period, 20 + 18) - 88 (5th period, 56 + 32) Since all these numbers follow the magic number rule, they belong to the same group. ### Conclusion: The correct option is the one where the elements share the same group based on the magic number rule.

To determine which elements belong to the same group from the given list, we can follow these steps: ### Step-by-Step Solution: 1. **Identify the Elements**: First, we need to identify the atomic numbers of the elements provided in the question. Let's assume the elements are represented by their atomic numbers. 2. **Sort the Atomic Numbers**: Arrange the atomic numbers in ascending order to analyze their periodicity. ...
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CENGAGE CHEMISTRY-PERIODIC CLASSIFICATION OF ELEMENTS AND GENERAL INORGANIC CHEMISTRY-Exercises (Singlecorrect) General Electronic Configuration And Periodicity
  1. The statement that is false regarding the long form the periodic tabl...

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  2. In the periodic table, going down in fluorine group

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  3. In the long form of periodic table all the non-metals are placed under

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  4. Alkali metals in each period have

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  5. Which one pair of atoms or ions will have same configuration ?

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  6. In the modern periodic table, the period indicates the value of

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  7. Which of the following does not reflect periodicity of elements ?

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  8. The 3rd period of the periodic table contains

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  9. Which of the following set

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  10. Which of the following belongs to the category of transition metal?

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  11. Without looking at the periodic table, select the elements belonging t...

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  12. The elements of same group of the periodic table have

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  13. The elements which are characterised by the outer shell configuration ...

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  14. The outer most electronic configuration of transition elements is

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  15. An element with atomic number 20 will be placed in which period of the...

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  16. The statement that is not correct for periodic classification of eleme...

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  17. In the modern periodic table, elements are arranged in

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  18. Name of the heaviest naturally occurring element.

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  19. The screening effect of d-electron is

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  20. Which of the following represents the electronic configuration of the ...

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