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Standard IX

Chemistry

Compounds

Question 35 A...

Question

Question 35
An element X has a mass number 4 and atomic number 2. Write the valency of this element.

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Solution

Atomic number = 2
Hence, number of electrons = 2
Thus, the element has only K shell containing 2 electrons i.e., a complete duplet.
Hence, its valency = 0

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Q. Ramu has an element

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Standard IX Chemistry

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Question 35 An element X has a mass number 4 and atomic number 2. Write the valency of this element.

Atomic number = 2 Hence, number of electrons = 2 Thus, the element has only K shell containing 2 electrons i.e., a complete duplet. Hence, its valency = 0

Question 35
An element X has a mass number 4 and atomic number 2. Write the valency of this element.

Atomic number = 2
Hence, number of electrons = 2
Thus, the element has only K shell containing 2 electrons i.e., a complete duplet.
Hence, its valency = 0