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Few general names are given along with their valence shell configurations. Mark the incorrect name.
- a)ns2 np6 - Noble gases
- b)ns2 np5 - Halogens
- c)ns1 - Alkali metals
- d)ns2 np2 - Chalcogens
Correct answer is option 'D'. Can you explain this answer?
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Few general names are given along with their valence shell configurati...
ns2 np2 are members of carbon family.
Chalcogens is the general name of 16th group elements.
Chalcogens is the general name of 16th group elements.
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Few general names are given along with their valence shell configurati...
Explanation:
The valence shell configuration of an atom specifies the number and type of electrons present in the outermost energy level or shell. Based on the given valence shell configurations, we need to determine which name is incorrect.
Valence Shell Configurations:
a) ns2 np6 - Noble gases
b) ns2 np5 - Halogens
c) ns1 - Alkali metals
d) ns2 np2 - Chalcogens
Incorrect Name:
The incorrect name is option 'D' - Chalcogens.
Explanation:
Chalcogens are a group of elements in the periodic table that belong to Group 16. The valence shell configuration of chalcogens is ns2 np4, not ns2 np2 as mentioned in option 'D'.
The correct valence shell configurations for the given names are as follows:
a) Noble gases - ns2 np6
Noble gases belong to Group 18 and have completely filled valence shells with 8 electrons (except for helium, which has 2 electrons). The ns2 np6 configuration represents the complete filling of the s and p orbitals in the outermost energy level.
b) Halogens - ns2 np5
Halogens belong to Group 17 and have 7 valence electrons. The ns2 np5 configuration represents the presence of 2 electrons in the s orbital and 5 electrons in the p orbital of the outermost energy level.
c) Alkali metals - ns1
Alkali metals belong to Group 1 and have 1 valence electron. The ns1 configuration represents the presence of 1 electron in the s orbital of the outermost energy level.
d) Chalcogens - ns2 np4 (Correct valence shell configuration)
Chalcogens belong to Group 16 and have 6 valence electrons. The ns2 np4 configuration represents the presence of 2 electrons in the s orbital and 4 electrons in the p orbital of the outermost energy level.
Therefore, the incorrect name is option 'D' - Chalcogens.
The valence shell configuration of an atom specifies the number and type of electrons present in the outermost energy level or shell. Based on the given valence shell configurations, we need to determine which name is incorrect.
Valence Shell Configurations:
a) ns2 np6 - Noble gases
b) ns2 np5 - Halogens
c) ns1 - Alkali metals
d) ns2 np2 - Chalcogens
Incorrect Name:
The incorrect name is option 'D' - Chalcogens.
Explanation:
Chalcogens are a group of elements in the periodic table that belong to Group 16. The valence shell configuration of chalcogens is ns2 np4, not ns2 np2 as mentioned in option 'D'.
The correct valence shell configurations for the given names are as follows:
a) Noble gases - ns2 np6
Noble gases belong to Group 18 and have completely filled valence shells with 8 electrons (except for helium, which has 2 electrons). The ns2 np6 configuration represents the complete filling of the s and p orbitals in the outermost energy level.
b) Halogens - ns2 np5
Halogens belong to Group 17 and have 7 valence electrons. The ns2 np5 configuration represents the presence of 2 electrons in the s orbital and 5 electrons in the p orbital of the outermost energy level.
c) Alkali metals - ns1
Alkali metals belong to Group 1 and have 1 valence electron. The ns1 configuration represents the presence of 1 electron in the s orbital of the outermost energy level.
d) Chalcogens - ns2 np4 (Correct valence shell configuration)
Chalcogens belong to Group 16 and have 6 valence electrons. The ns2 np4 configuration represents the presence of 2 electrons in the s orbital and 4 electrons in the p orbital of the outermost energy level.
Therefore, the incorrect name is option 'D' - Chalcogens.
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Few general names are given along with their valence shell configurations. Mark the incorrect name.a)ns2 np6 - Noble gasesb)ns2 np5 - Halogensc)ns1 - Alkali metalsd)ns2np2 - ChalcogensCorrect answer is option 'D'. Can you explain this answer?
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