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प्रश्न
Name or state following with reference to the element of the first three periods of the periodic table.
An alkaline earth metal in period 3.
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उत्तर
An alkaline earth metal in period 3 is Mg [Magnesium]
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संबंधित प्रश्न
Consider the following elements: Be, Li, Na, Ca, K. Name the elements of (a) same group (b) same period.
Name the alkali metals, How many electron(s) they have in their outermost orbit.
Give reason:
Alkali metals are kept in an inert solvent.
Give reason:
Alkali and alkaline earth metal compounds usually form electrovalent compounds.
Give reason:
Inert gases do not form compounds.
Write a short note on the following type of element –
alkali metals
Write a short note on the following type of element –
alkaline earth metals
Write a short note on the following type of element –
noble gases
State the following:
The group from the groups 1 [IA], 2 [IIA], 16 [VIA] and 7 [VIIA] whose elements are most electronegative.
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 |
