Advertisements
Advertisements
प्रश्न
How were elements arranged in the long form of the periodic table or the Modern Periodic Table?
उत्तर
Long-form of periodic table elements were arranged in increasing order of atomic number.
APPEARS IN
संबंधित प्रश्न
Explain why, the noble gases are placed in a separate group.
Name the scientist who prepared modern periodic table.
Name the metals in the first twenty 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.
Ammonium
Give the symbol and valency of the following element and radical.
Bisulphate
State the number of elements in Period 2 of the Periodic Table.
Element ‘X’ forms a chloride with the formula XCl2, which is solid with a high melting point. X would most likely be in the same group of the periodic table as: ______
Compare the radii of two species X and Y. Give reasons for your answer.
- X has 12 protons and 12 electrons
- Y has 12 protons and 10 electrons
Choose an element from period 3 of modern periodic table that matches the description given below in instance. Give a reason for your choice.
It has same valency as Lithium.
