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Standard X
Chemistry
Classification of Modern Periodic Table
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Question

The question refers to the elements of the periodic table with atomic numbers from 3 to 18. Some of the elements are shown by letters, but letters are not the usual symbols of the elements.
Which of these :
(d) is an element with valency 4 ?

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Solution

Elements of group 14 have 4 valence electrons. They can share their 4 valence electrons with other combining elements thus, they have valency 4.
  • Among all the elements listed in the table, element D with atomic number 6 and L with atomic number 14 resembles the elements carbon and silicon respectively which belong to group 14.
Therefore, D and L show valency 4.

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