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प्रश्न
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.
विकल्प
True
False
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उत्तर
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- True
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संबंधित प्रश्न
What is meant by a group, in a periodic table?
State whether the following statement is true or false:
On going down in a group of the periodic table, the number of valence electrons increases.
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Consider the following elements:
20Ca, 8O, 18Ar, 16S, 4Be, 2He
Which of the above elements would you expect to be:
(i) very stable?
(ii) in group 2 of the periodic table?
(iii) in group 16 of the periodic table?
Name the type of elements which have two electrons in the outermost orbit.
Give the symbol and valency of the following element and radical.
Nitrogen [Nitride]
State what is meant by the term chemical formula.
How does the property vary in periods and in groups?
An element ‘M' has 50% of the electrons filled in the 3rd shell as in the 2nd shell. The atomic number of ‘M’ is ______.
