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प्रश्न
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The family of metals having valency one.
उत्तर
The family of metals having valency one = Alkali metals
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संबंधित प्रश्न
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The period with electrons in the shells K, L, and M.
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The group with valency zero.
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Nonmetals in the third period.
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Two elements having valency 4.
Write a short note on the following type of element –
transition elements
Write a short note on the following type of element –
normal elements
State whether true or false. If false, correct the statement.
Group 17 elements are named as Halogens.
d-block elements are otherwise known as ______.
What are the p-block elements
Group 1 (except hydrogen) elements are called alkali metals.
Assertion (A): Group 2 elements in the modem periodic table are called alkaline earth metals.
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.
Which block elements are known as transition elements?
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?
