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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.
What are the following group known as?
Group 17
Name two elements of each group.
Name and state the following with reference to the elements of the first three periods of the periodic table.
Noble gas having electronic configuration: 2, 8, 8.
Name and state the following with reference to the elements of the first three periods of the periodic table.
Group whose elements have zero valencies.
Give reason:
Alkali and alkaline earth metal compounds usually form electrovalent compounds.
State the characteristics which remain similar in moving down in a group of the periodic table.
Write a short note on the following type of element –
halogens
State the following:
The group from the groups 1 [IA], 2 [IIA], 16 [VIA] and 7 [VIIA] whose elements are most electronegative.
State the following:
The group which contains highly reactive electronegative non-metals including chlorine.
