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प्रश्न
How many periods and groups are there in the modern periodic table?
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उत्तर
Eighteen groups and seven periods
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संबंधित प्रश्न
Consider the following elements:
Na, Ca, Al, K, Mg, Li
Which of these elements belong to the same period of the periodic table?
Name two elements in halogens.
How does the electronic configuration of an atom relate to its position in the modern periodic table?
What is the main characteristic of the last element in each period of the periodic table?
Give the symbol and valency of the following element and radical.
Chlorine [Chloride]
Give the chemical formula of magnesium nitrate
How were elements arranged in the long form of the periodic table or the Modern Periodic Table?
To the left of the zig-zag line in the periodic table are the metal elements.
Name two elements that you would expect to show chemical reactions similar to calcium. What is the basis of your choice?
Answer the following in respect of element \[\ce{_16^32S}\].
To which group and period does it belong?
