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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
How do atomic structures (electron arrangements) change in a period with an increase in atomic numbers moving left to right?
What happens to the number of valence electrons in atoms of elements as we go down a group of the periodic table?
How do alkaline earth metals occur in nature?
Comment on the (i) reactivity (ii) colour (iii) physical state of group 17 elements.
Name the gas used in:
Light bulbs
Give reason:
Alkali metals are kept in an inert solvent.
Give reason:
Alkali metals and halogens do not occur free in nature.
Give reason:
Alkali and alkaline earth metal compounds usually form electrovalent compounds.
Give reason:
Inert gases do not form compounds.
State the following:
The group which contains highly reactive electronegative non-metals including chlorine.
