which noble gas has only two electrons in its valence shell
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Which noble gas has only two electrons in its valence shell?
Which noble gas has only two electrons in its valence shell?
Byju's Answer Standard IX Chemistry Noble Gases Which noble g... Question
Which noble gas has only two electrons in its valence shell?
A Radon B Krypton C Neon D Helium Open in App Solution
The correct option is D
Helium
Explanation for correct option (D):Helium has two electrons in its valence shell having the atomic number2
and its electronic configuration is called duplet configuration.
Helium has the electronic configuration
2 .
It has only two electrons in its valance shell.
Explanation for incorrect options:(A) Radon: Radon is a noble gas having an atomic number86
. it has an octet configuration. It has total
8
electrons in its valence shell.
(B) Krypton: Kryptonhas an octet configuration. It has total8
electrons in its valence shell. Krypton has the atomic number
36 .
(C) Neon: Neon has an octet configuration. It has total8
electrons in its valence shell. The atomic number of Neon is
10 .
Hence, option (D) is correct. i.e., Helium has only two electrons in its valence shell.Suggest Corrections 0
SIMILAR QUESTIONS
Q. The noble gas having only two electrons in its valence shell is:(a) Ar (b) Ne (c) He (d) Kr
Q.The noble gas having only two electons in its valence shell is:
(a) Ar (b) Ne (c) He (d) Kr
Q. Which noble gas has less than 8 electrons in the valence shell of its atom? What is this number?Q.Which element has
(a) two shells, both of which are completely filled with electrons?
(b) the electronic configuration 2, 8, 2?
(c) a total of three shells, with four electrons in its valence shell?
(d) a total of two shells, with three electrons in its valence shell?
(e) twice as many electrons in its second shell as in its first shell?
Q.Helium, a noble gas has eight electrons in its valence shell.
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The noble gas having only two electrons in its valence shell is:
cThe noble gas having only two electrons in its valence shell is:
The noble gas having only two electrons in its valence shell is:
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Updated On: 27-06-2022
Text Solution A Ar B Ne C He D Kr Answer
The correct Answer is C
Solution c Answer
Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams.
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443007020 Text Solution Which element has:
a] two shells, each completely filled with electrons?
b] the electron configuration 2, 8, 2?
c] three shells, with four electrons in the valence shell?
d] two shells, with three electrons in its valence shell?
e] twice as many electrons in its second shell as in its first shell?
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Write the general electronic configuration of noble gases.
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Which noble gas has less than 8 electrons in its valency shell?
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Assertion (A): Helium is noble gas. Reason (R) : Any species (atoms or ion)with eight electrons in the valence shell is stable.
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Except _____ gas all other noble gases have octet in their valence shell.
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The noble gas that does not possess 8 electrons in its outer most shell:
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The electronic configuration of the outermost shell of noble gas is
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Inert gas not having _____ electrons in the valence shell is ____
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Write the name of noble gas having 2 electrons in its valence shell.
Write the name of noble gas having 2 electrons in its valence shell.
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Write the name of noble gas having 2 electrons in its valence shell.
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SOLUTION
The noble gas having 2 electrons in its valence shell is helium.
Concept: Modern Periodic Table and Electronic Configuration of Elements
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Chapter 2: Periodic Classication of Element - Answer in one sentence.
Q 5 Q 4 Q 6
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Chapter 2 Periodic Classication of Element
Answer in one sentence. | Q 5
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