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प्रश्न
Name the type of elements which have two electrons in the outermost orbit.
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उत्तर
Alkaline Earth metals
संबंधित प्रश्न
What is a group in the periodic table?
What are the periods in a periodic table? Give two characteristics of each.
What are the groups in a periodic table? Give two characteristics of each.
Give the symbol and valency of the following element and radical.
Aluminium
Give the symbol and valency of the following element and radical.
Nitrate
The modern periodic table has 1 to 7 periods.
State whether true or false. If false, correct the statement.
Lanthanides and actinides are kept at the bottom of the periodic table because they resemble each other but they do not resemble with any other group elements.
______ forms the basis of the modern periodic table.
Choose an element from period 3 of modern periodic table that matches the description given below in instance. Give a reason for your choice.
It has same valency as Lithium.
Give the criteria on the basis of which elements are placed (i) in a group and (ii) in a period in the modern periodic table. The atomic number of an element is 16. According to the criteria, in which group and period it should be placed?
