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Question
Name or state following with reference to the element of the first three periods of the periodic table.
The valency of elements in group 1 [I–A].
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Solution
Valency of elements in group [I–A] is +1
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RELATED QUESTIONS
How do the atomic size and metallic character of elements vary as we move :-
(a) down a group and
(b) from left to right in a period
How does the number of valence electrons vary on moving from left or right in the second period of the periodic table?
Rewrite the following statement after correction, if necessary:
The metallic character of elements in a period increases gradually on moving from left to right.
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Complete the following sentences
The similarities in the properties of a group of elements are because they have the same …………………
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Select the correct answer
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Use the letters only written in the Periodic Table given below to answer the questions that follow:
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(c) Which Metallic element is more reactive than R?
(d) Which element has its electrons arranged in four shells?
The position of elements A, B, C, D and E in the periodic table are shown below:
|
Group 1 |
Group 2 |
Group 17 |
Group 18 |
|
|
|
|
D |
|
|
B |
C |
|
|
A |
|
|
E |
Which is larger in size (i) D or E (ii) B or C
Answer the following question:
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