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प्रश्न
Consider the following elements: Be, Li, Na, Ca, K. Name the elements of (a) same group (b) same period.
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उत्तर
|
Element |
At. No. |
Electronic distribution |
|
Be |
4 |
2, 2 |
|
Li |
3 |
2, 1 |
|
Na |
11 |
2, 8, 1 |
|
Ca |
20 |
2, 8, 8, 2 |
|
K |
19 |
2, 8, 8, 1 |
Same IA group (Li, Na, K) and IIA group (Be, Ca)
In the second period (Be, Li) and in the fourth period (K, Ca).
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संबंधित प्रश्न
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Give reason:
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State the characteristics which remain similar in moving down in a group of the periodic table.
Give a reason for the following:
Noble gases do not form compounds readily.
Give a reason for the following:
Group 1 [I – A] elements are called alkali metals.
State the following:
The group from the groups 1 [IA], 2 [IIA], 16 [VIA] and 7 [VIIA] whose elements are most electronegative.
State the following:
The group which contains highly reactive electronegative non-metals including chlorine.
