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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. |
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|
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
Arrange the Elements of Group 17 and Group 1 According to the Given Conditions.
Increasing order of atomic size,
What are the following group known as?
Group 17
Name the gas used in:
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Give reason:
Inert gases do not form compounds.
State the characteristics which remain similar in moving down in a group of the periodic table.
Write a short note on the following type of element –
noble gases
Name or state following with reference to the element of the first three periods of the periodic table.
An alkaline earth metal in period 3.
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 which contains highly reactive electronegative non-metals including chlorine.
