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Collective name given to the elements wi...

Collective name given to the elements with outer shell configuration `ns^2 np^6` is

A

chalcogens

B

alkaline earths

C

transition elements

D

nobles gas

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The correct Answer is:
To solve the question regarding the collective name given to the elements with the outer shell configuration `ns^2 np^6`, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Configuration**: The given configuration `ns^2 np^6` indicates that the outermost shell (valence shell) of the elements has 2 electrons in the s subshell and 6 electrons in the p subshell. This totals to 8 electrons in the outer shell. 2. **Identify the Group**: In the periodic table, elements with 8 electrons in their outer shell are typically found in Group 18. This is because the elements in this group have a full outer shell, which is a characteristic of noble gases. 3. **List the Noble Gases**: The elements that belong to Group 18 (noble gases) include: - Helium (He) - Neon (Ne) - Argon (Ar) - Krypton (Kr) - Xenon (Xe) - Radon (Rn) 4. **Characteristics of Noble Gases**: Noble gases are known for being chemically inert, meaning they do not readily react with other elements. They exist in a monoatomic form under standard conditions. 5. **Conclusion**: Therefore, the collective name given to the elements with the outer shell configuration `ns^2 np^6` is **Noble Gases**. ### Final Answer: The collective name given to the elements with outer shell configuration `ns^2 np^6` is **Noble Gases**. ---
To solve the question regarding the collective name given to the elements with the outer shell configuration `ns^2 np^6`, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Configuration**: The given configuration `ns^2 np^6` indicates that the outermost shell (valence shell) of the elements has 2 electrons in the s subshell and 6 electrons in the p subshell. This totals to 8 electrons in the outer shell. 2. **Identify the Group**: In the periodic table, elements with 8 electrons in their outer shell are typically found in Group 18. This is because the elements in this group have a full outer shell, which is a characteristic of noble gases. ...
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