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An element has an electronic configuration of 2, 8, 7. Its valency is ?
- a)1
- b)7
- c)17
- d)8
Correct answer is option 'A'. Can you explain this answer?
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An element has an electronic configuration of 2, 8, 7. Its valency is ...
Correct option is A)
Given 2,8,7 in this first shell can have 2 electrons where as second shell can have 8 electrons 2 in s orbital and 6 in p orbital.
Hence remaining 7 must be only in third shell as third shell has capacity of 18 electrons.
Here in valence shell we have 7 electrons in which 2 are in s orbital and 5 are in p orbital in which 1 is unpaired. Hence valency electrons is 7 for atomic number 17 that is chlorine and valency is 1 as it has to get one electron to get octet configuration.
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An element has an electronic configuration of 2, 8, 7. Its valency is ...
Valency of an Element with Electronic Configuration 2, 8, 7
Electronic Configuration of the Element
The electronic configuration of the element is given as 2, 8, 7. This means that the element has 3 shells in its atom. The first shell has 2 electrons, the second shell has 8 electrons, and the third shell has 7 electrons.
Definition of Valency
Valency is defined as the number of electrons an atom can gain, lose or share while forming a chemical bond. It is determined by the number of valence electrons in the outermost shell of the atom.
Calculation of Valency
To calculate the valency of the element, we need to determine the number of valence electrons present in the atom. Valence electrons are the electrons present in the outermost shell of an atom.
In this case, the element has 7 valence electrons in its outermost shell. Valency is given by the formula:
Valency = 8 - Number of Valence Electrons
In this case, the valency of the element is:
Valency = 8 - 7 = 1
Therefore, the valency of the element with electronic configuration 2, 8, 7 is 1.
Electronic Configuration of the Element
The electronic configuration of the element is given as 2, 8, 7. This means that the element has 3 shells in its atom. The first shell has 2 electrons, the second shell has 8 electrons, and the third shell has 7 electrons.
Definition of Valency
Valency is defined as the number of electrons an atom can gain, lose or share while forming a chemical bond. It is determined by the number of valence electrons in the outermost shell of the atom.
Calculation of Valency
To calculate the valency of the element, we need to determine the number of valence electrons present in the atom. Valence electrons are the electrons present in the outermost shell of an atom.
In this case, the element has 7 valence electrons in its outermost shell. Valency is given by the formula:
Valency = 8 - Number of Valence Electrons
In this case, the valency of the element is:
Valency = 8 - 7 = 1
Therefore, the valency of the element with electronic configuration 2, 8, 7 is 1.
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An element has an electronic configuration of 2, 8, 7. Its valency is ...
Valency of an Element with Electronic Configuration
The valency of an element is the number of electrons an atom gains or loses to form a chemical bond with another atom. The electronic configuration of an element can help determine its valency.
Given Electronic Configuration: 2, 8, 7
The number of valence electrons in an element is equal to the number of electrons in the outermost shell. In this case, the outermost shell contains seven electrons, so the valency of the element can be determined as follows:
Valency = Number of Electrons Needed to Complete Outermost Shell - Number of Valence Electrons
In this case, the outermost shell of the element needs one electron to complete it (since the maximum number of electrons in the outermost shell is eight). The element has seven valence electrons, so:
Valency = 1 - 7
Valency = -6
However, since valency cannot be negative, the absolute value of the valency is taken, which is:
|Valency| = |-6| = 6
Therefore, the valency of the element with electronic configuration 2, 8, 7 is 1.
The valency of an element is the number of electrons an atom gains or loses to form a chemical bond with another atom. The electronic configuration of an element can help determine its valency.
Given Electronic Configuration: 2, 8, 7
The number of valence electrons in an element is equal to the number of electrons in the outermost shell. In this case, the outermost shell contains seven electrons, so the valency of the element can be determined as follows:
Valency = Number of Electrons Needed to Complete Outermost Shell - Number of Valence Electrons
In this case, the outermost shell of the element needs one electron to complete it (since the maximum number of electrons in the outermost shell is eight). The element has seven valence electrons, so:
Valency = 1 - 7
Valency = -6
However, since valency cannot be negative, the absolute value of the valency is taken, which is:
|Valency| = |-6| = 6
Therefore, the valency of the element with electronic configuration 2, 8, 7 is 1.
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An element has an electronic configuration of 2, 8, 7. Its valency is ?a)1b)7c)17d)8Correct answer is option 'A'. Can you explain this answer?
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An element has an electronic configuration of 2, 8, 7. Its valency is ?a)1b)7c)17d)8Correct answer is option 'A'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about An element has an electronic configuration of 2, 8, 7. Its valency is ?a)1b)7c)17d)8Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An element has an electronic configuration of 2, 8, 7. Its valency is ?a)1b)7c)17d)8Correct answer is option 'A'. Can you explain this answer?.
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