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Question
Write a short note on the following type of element –
alkali metals
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Solution
Elements of I-A group like Li, Na, K, Rb, Cs, fr are called alkali metals because these metals react with water to form alkalis and hydrogen.
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RELATED QUESTIONS
Consider the following elements: Be, Li, Na, Ca, K. Name the elements of (a) same group (b) same period.
What are the following group known as?
Group 17
Name the alkali metals, How many electron(s) they have in their outermost orbit.
Take any one alkali metal and write its reaction with (i)oxygen (ii)water (iii)acid.
How many electrons do inert gases have in their valence shells?
Name the gas used in:
Filling balloons
Give reason:
Inert gases do not form compounds.
State the following:
The group from the groups 1 [IA], 2 [IIA], 16 [VIA] and 7 [VIIA] whose elements are most electronegative.
State the following:
The group whose elements are unreactive or inert.
Match the elements of List – I with their type from List – II.
| List – I | List – II |
| 1. Highly reactive, univalent metals | A: Halogens |
| 2. Highly reactive, univalent non-metals | B: Transition elements |
| 3. Unreactive, inert elements | C: Alkali metals |
| 4. Elements of group 3 to 12 [IB to VII B and VIII] | D: Lanthanide series |
| 5. Radioactive elements | E: Noble gases |
| F: Actinide series |
