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Question
Write the name from the description.
The family of metals having valency one.
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Solution
The family of metals having valency one = Alkali metals
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Write the name from the description.
The period with electrons in the shells K, L, and M.
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The family of metals having valency two.
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Nonmetals in the third period.
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Two elements having valency 4.
Match column A with column B.
|
Column A |
Column B |
|
(a) Element short by 1 electron in octet |
(i) Transition elements |
|
(b) Highly reactive metals |
(ii) Noble gases |
|
(c) Non-reactive elements |
(iii) Alkali metals |
|
(d) Elements of groups 3 to 12 |
(iv) Alkaline earth metals |
|
(e) Radioactive elements |
(v) Halogens |
|
(f) Elements with 2 electrons in the outermost orbit |
(vi)Actinides |
Write a short note on the following type of element –
inner transition elements
Write a short note on the following type of element –
normal elements
d-block elements are otherwise known as ______.
______ block element is placed at the bottom of the periodic table.
What are the p-block elements
Group 1 (except hydrogen) elements are called alkali metals.
d-block elements are called transition elements.
Group 3-12 elements in the modern periodic table are called d block elements.
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.
How are elements placed around the zig-zag line in the p-block of the periodic table?
