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प्रश्न
Fill in the following blank with suitable word:
The horizontal rows in a periodic table are called ...............
उत्तर
The horizontal rows in a periodic table are called periods.
संबंधित प्रश्न
Name two elements you would expect to show chemical reactions similar to magnesium. What is the basis for your choice?
Compare and contrast the arrangement of elements in Mendeleev’s periodic Table and the Modern Periodic Table.
The modern periodic table was prepared by ______.
How many periods and groups are there in the modern periodic table?
How does number of (i) valence electrons (ii) valency; vary on moving from left to right in the second period of a periodic table?
Give the symbol and valency of the following element and radical.
Bicarbonate
Give the symbol and valency of the following element and radical.
Bisulphite
Elements in the modern periodic table are arranged in ______groups and______ periods.
In the modern periodic table, elements are arranged according to their ______
Name two elements that you would expect to show chemical reactions similar to calcium. What is the basis of your choice?
