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प्रश्न
The number of periods and groups in the periodic table are ______
पर्याय
6, 16
7, 17
8, 18
7, 18
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उत्तर
The number of periods and groups in the periodic table is 7, 18.
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संबंधित प्रश्न
Rewrite the following statement after correction, if necessary:
Periods are the horizontal rows of elements.
As element X has mass number 40 and contains 21 neutrons in its atom. To which group of the periodic table does it belong?
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An element X combines with oxygen to form an oxide XO. This oxide is electrically conducting. Write the formula of the compound formed when X reacts with chlorine.
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The atom of an element has electronic configuration 2, 8, 7. To which of the following elements would it be chemically similar?
What type of oxide would Eka– aluminium form?
Complete the following triads by inserting the missing elements.
Ca, ______, Ba
The atomic number of an element 'X' is 11.
- Write the electronic configuration of X and find its valency.
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