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प्रश्न
Name the alkali metals, How many electron(s) they have in their outermost orbit.
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उत्तर
Name of the alkali metals: Lithium, sodium, potassium, rubidium, cesium, and francium
Electrons in the outermost orbit: 1
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संबंधित प्रश्न
What are the following group known as?
Group 17
Name two elements of each group.
How do atomic structures (electron arrangements) change in a period with an increase in atomic numbers moving left to right?
Name and state the following with reference to the elements of the first three periods of the periodic table.
Noble gas with duplet arrangement of electrons.
Take any one alkali metal and write its reaction with (i)oxygen (ii)water (iii)acid.
Name the first three alkaline earth metals.
Write a short note on the following type of element –
alkali metals
Write a short note on the following type of element –
halogens
State the following:
The group which contains highly reactive electronegative non-metals including chlorine.
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 |
