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Questions
An element has its electron configuration as 2, 8, 2. Now answer the following question.
What is the group of this element?
Which column does this element belong to?
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Solution
The number of electrons in the element's outermost shell is two. This means it has a valency of 2. As a result, it belongs to Group 2.
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ii. What is the valency of this element?
iii. What is the group of this element?
iv. To which period does this element belong?
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| 1) s -block | a) Lanthanides and actinides |
| 2) p -block | b) Group 3 to 12 |
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| 4) f -block | d) Group 13 to 18 |
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