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प्रश्न
Name the type of elements which have two outermost shell incomplete.
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उत्तर
Transition elements
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संबंधित प्रश्न
State how the valency of elements varies in a period of the periodic table?
What is a group in the periodic table?
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?
What is the main characteristic of the last element in each period of the periodic table?
From the standpoint of atomic structure, what determines which elements will be the first and which the last in a period of the periodic table?
What is the number of elements in the 3rd period, of the modern periodic table?
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.
Identify gas A in the following experiment.
The longest period of the Modern Periodic Table is period.
Give reason for the following:
Inert gases do not form ion.
