In long form of periodic table, elements are arranged in tabular form following
The aim of periodic classification of elements is:
In the periodic table, noble gases are found at the end of:
Mendeleev’s periodic table failed to:
Lothar Meyer studied the
Number of electron in the valence shell of an atom is represented by:
Elements placed in the same group possess same ________ properties.
Along a period, number of electron in the valence shell of atom:
Lother Mayer studied the relationship between atomic weights of elements and their ________ properties.
__________ provided fundamental basis for the classification of elements.
The arrangement of elements in Mendeleev’s Periodic table was done in _____ direction.
Mendeleev’s Periodic table helped to ________.
The modern periodic table is based in the ________ order of atomic numbers.
Elements placed in the same period have same number of _______.
Noble gases are ______ elements.
_______ are called rare earth elements.
According to Mendeleev’s Periodic Law, the properties of elements depend on their ________.
Law of Octaves lost its importance due to the discovery of ______.Law of Octaves lost its importance due to the discovery of ______.