Need for classification - class-IX
Description: need for classification | |
Number of Questions: 19 | |
Created by: Sangita Pandit | |
Tags: classification of elements- the periodic table chemistry periodic table, periodic properties and variations of properties periodic table atomic theory, periodic classification and properties of elements periodic classification of elements classification of elements and periodicity in properties |
In laboratory burners, we use
Who was the first to classify the elements into metals and non-metals?
The elements posses stable electronic configuration are called as __________.
According to classification of elements most of non-metals are placed in ________ block.
After the classification of elements study of elements become____________.
Classification of elements are done on the basis of ___________.
The physical properties of elements changes according to_____________.
Catalyst in a reaction:
A biological catalyst is
Transition elements are also known as ____________.
A metal crystallizes with a face-centred cubic lattice. The edge length of the unit cell is 408 pm. The diameter of the metal atom is:
Hydrolysis of urea is an example of
Predict block, group and period of $Sb$.
Based on modern classification of periodic table atomic number increases on moving from _________ in periodic table.
The modern periodic table is most_________ form of periodic table.
Significance of classification of periodic table is to ___________.
Classification of periodic table based on atomic number is given by:
Alkali and alkaline earth metals are ________ elements.
Lanthanoids are also called as ___________.