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Question
Answer the following questions related to the modern periodic table.
How are elements placed around the zig-zag line in the p-block of the periodic table?
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Solution
The metalloid elements lie along the border of this zig-zag line. All the metals lie on the left side of the zig-zag line while all the non-metals lie on the right side.
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|
Column A |
Column B |
|
(a) Element short by 1 electron in octet |
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|
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|
(c) Non-reactive elements |
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|
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|
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|
(f) Elements with 2 electrons in the outermost orbit |
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Write a short note on the following type of element –
normal elements
d-block elements are otherwise known as ______.
If the electronic configuration of an element is 1s2 2s2 2p6 3s2 3p1’then it will
occupy ______ block of the periodic table.
______ block element is placed at the bottom of the periodic table.
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Group 1 (except hydrogen) elements are called alkali metals.
d-block elements are called transition elements.
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Reason (R): The oxides of group 2 elements produce alkaline solutions when they are dissolved in water.
Assertion (A): Noble gases are chemically inert in nature.
Reason (R): Noble gases have stable electronic structures.
Write the answer to the questions with reference to the periodic table.

- What do (A), (B), (C), and (D) represent? [1]
- Elements are arranged in increasing order of their ______. [1]
- Write the electronic configuration of the first four elements in Group I. [1]
- What change in atomic radius is observed in moving from left to right in a Period? [1]
- Give a reason for (d). [1]
Answer the following questions related to the modern periodic table.
Name the blocks with the groups that they consist of.
Answer the following questions related to the modern periodic table.
Which block elements are known as transition elements?
