What is the atomic number of element of period 3 and group 17 of the Periodic Table?
What is the atomic number of element of period 3 and group 17 of the Periodic Table? Read More »
An atom of an element has the electronic confi-guration 2,8,2. To which group does it belong?
Element ‘X’ forms a chloride with the formula XCl2, which is a solid with high melting point. X would most likely be in the same group of the periodic table as
In Mendeleev’s Periodic Table, gaps were left for the elements to be discovered later. Which of the following elements found a place in the Periodic Table later?
The properties of eka-aluminium predicted by Mendeleev are the same as the properties of later discovered element
Where would you locate the element with electronic configuration 2, 8 in the Modern Periodic Table?
The arrangement of elements in the Modem Periodic Table is based on their
The arrangement of elements in the Modem Periodic Table is based on their Read More »
At the time of Mendeleev, the number of elements known was
At the time of Mendeleev, the number of elements known was Read More »
