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प्रश्न
How do alkaline earth metals occur in nature?
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उत्तर
Alkaline earth metals occur in nature in the combined state and not in the free state as they are very reactive.
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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 two elements of each group.
What happens to the number of valence electrons in atoms of elements as we go down a group of the periodic table?
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.
Name the method by which alkali metals can be extracted.
Comment on the (i) reactivity (ii) colour (iii) physical state of group 17 elements.
Name the gas used in:
Light bulbs
‘The periodic table contains elements methodically grouped together’.
State the following:
The group whose elements are unreactive or inert.
State the following:
The group which contains highly reactive electronegative non-metals including chlorine.
