Скачать или смотреть Elements of Groups 1 and Group 2 class 11 chemistry chapter 8 exercise solutions

Elements of Groups 1 and Group 2 class 11 chemistry chapter 8 exercise solutions

11th chemistry chapter 8 elements of group 1 and 2 exercises
class 11 chemistry chapter 8 exercise solutions
elements of group 1 and 2 class 11 chemistry exercise
exercise solving of elements of group 1 and 2
chemistry class 11 chapter 8 elements of group 1 and 2
elements of group 1 and 2 class 11 chemistry
11th students | New Syllabus | Chemistry ch. 8 Elements of Groups 1 and Group 2 exercise.
8. Elements Of Group 1 and Group 2 😃| 11th Chemistry |Chemistry Exercise Solutions | Handy Notes
Exercise solving of Elements of Group 1 and 2 Question No. 1 to 5

Class 11
Chemistry
8. Elements of Groups 1 and Group 2
Exercise solutions
By: solutions made easy
1. Explain the following
A. Hydrogen shows similarity with alkali metals as well as halogens.
Answer:
• The electronic configuration of hydrogen is 1s¹ which is similar to the outer electronic configuration of alkali metals of group 1 i.e., ns¹.
• However, 1s¹ also resembles the outer electronic configuration of group 17 elements i.e., ns² np⁵
• By adding one electron to H, it will attain the electronic configuration of the inert gas He which is 1s², and by adding one electron to ns² np⁵ we get ns² np⁶ which is the outer electronic configuration of the remaining inert gases.
• Therefore, some chemical properties of hydrogen are similar to those of alkali metals while some resemble halogens.
Solutions made easy
B. Standard reduction potential of alkali metals have high negative values.
Answer:
• The general outer electronic configuration of alkali metals is ns1.
• They readily lose one valence shell electron to achieve stable noble gas configuration and hence, they are highly electropositive and are good reducing agents.
Hence, standard reduction potentials of alkali metals have high negative values.
Solutions made easy
C. Alkaline earth metals have low values of electronegativity; which decrease down the group.
Answer:
• Electronegativity represents attractive force exerted by the nucleus on shared electrons.
• The general outer electronic configuration of alkaline earth metals is ns². They readily lose their two valence shell electrons to achieve stable noble gas configuration. They are electropositive and hence, they have low values of electronegativity.
Solutions made easy
D. Sodium dissolves in liquid ammonia to form a solution which shows electrical conductivity

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