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प्रश्न
What is a period in a periodic table?
उत्तर
A period is a horizontal row of elements in a periodic table.
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संबंधित प्रश्न
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.
On the basis of electronic configuration, how will you identify chemically similar elements?
What are horizontal rows and vertical columns in a periodic table known as?
Name two elements in Inert gas.
What do you understand by typical elements?
Answer the following in respect of element `31/15 P`
Give its electronic configuration
State the main aim of classifying elements. Which is the more fundamental property of elements that is used in the development of Modern Periodic Table? Name and state the law based on this fundamental property. On which side of the periodic table one can find metals, non-metals and metalloids?
Answer the following question.
How it can be proved that the basic structure of the Modern Periodic Table is based on the electronic configuration of atoms of different elements?
Define periods of modern periodic table.
A group of elements in the periodic table is given below (Boron is the first member of the group and Thallium is the last).
Boron, Aluminium, Gallium, Indium, Thallium
Answer the following question in relation to the above group of elements:
If the electronic configuration of aluminium is 2, 8, 3, how many electrons are there in the outer shell of thallium?
