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प्रश्न
Name two elements in Alkaline earth metals.
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उत्तर
Calcium and magnesium.
संबंधित प्रश्न
Fill in the blank:
The modern periodic table consists of ……………. periods.
Write the names given to the vertical columns and horizontal rows in the Modern Periodic Table. How does the metallic character of elements vary on moving down a vertical column? How does the size of atomic radius vary on moving left to right in a horizontal row? Give reason in support of your answer in the above two cases.
How does the metallic character of elements in Modern Periodic Table vary on moving from left to right in a period, and (ii) down a group?Give reason to justify your answer.
Fill in the following blank with suitable word:
Group 1 elements are called ...............
Give two example of group 18 elements.
Explain why, the noble gases are placed in a separate group.
Name the scientist who prepared modern periodic table.
An element X belongs to 3rd period and group 2 of the periodic table. State:
(a) number of valence electrons
(b) valency
(c) metal or non-metal
(d) name of the element
Spot the error:
The elements of group 13 are called the carbon family.
Give reason for the following:
Inert gases do not form ion.
