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Question
Atomic number of a few elements are given below
10, 20, 7, 14
- Identify the elements
- Identify the Group number of these elements in the Periodic Table
- Identify the Periods of these elements in the Periodic Table
- What would be the electronic configuration for each of these elements?
- Determine the valency of these elements
Solution
- The given elements are neon, calcium, nitrogen and silicon.
- Neon - group number 18, calcium - group number 2, nitrogen - group number 15 and silicon - group number 14.
- Neon - 2nd period, calcium - 4th period, nitrogen - 2nd period and silicon - 3rd period.
- Neon - 2, 8
Calcium - 2, 8, 8, 2
nitrogen - 2, 7
silicon - 2, 8, 4 - Neon - valency is 0, calcium - valency is 2, nitrogen - valency is 3, silicon - valency is 4.
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