Advertisements
Advertisements
प्रश्न
How many groups and periods does the modern periodic table have?
उत्तर
The modern periodic table consists of seven horizontal rows and eighteen vertical columns.
संबंधित प्रश्न
Name two elements you would expect to show chemical reactions similar to magnesium. What is the basis for your choice?
How were the positions of cobalt and nickel resolved in the modern periodic table?
On which side of the periodic table will you find non-metals?
What are the merits of the modern periodic table of elements?
What do you understand by typical elements?
Arrange the elements of second and third periods in increasing order of their atomic size.
Third Period.
Give the symbol and valency of the following element and radical.
Sulphur [Sulphide]
Group 13 to 18 : p block : : _______ : d block
An element with atomic number ______ will form a basic oxide.
Name two elements that you would expect to show chemical reactions similar to calcium. What is the basis of your choice?
