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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.
उत्तर
An alkaline earth metal in period 3 is Mg [Magnesium]
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संबंधित प्रश्न
What are the following group known as?
Group 17
What are the following group known as?
Group 18
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.
Write the reactions of the first three alkaline earth metals with dilute hydrochloric acid.
Comment on the (i) reactivity (ii) colour (iii) physical state of group 17 elements.
Name the gas used in:
Filling balloons
Give reason:
Alkali metals are kept in an inert solvent.
Give reason:
Alkali and alkaline earth metal compounds usually form electrovalent compounds.
State the main helpful features of the long form of the periodic table.
Give a reason for the following:
Group 1 [I – A] elements are called alkali metals.
