The periodic classification is an arrangement of the elem...
The periodic classification is an arrangement of the elements
atomic weights
isotopic weights
molecular weights
atomic numbers
Correct answer is D
Elements in the periodic table are arranged according to their atomic number (proton number). Electronegativity increase from left to right while atomic radius increases down the group
Elements in the periodic table are arranged according to their atomic number (proton number). Electronegativity increase from left to right while atomic radius increases down the group
The reaction C2H6 → C2H + H2 is known as...
Which of the following is a common property of non-metals? ...
When X is heated with manganese (IV) oxide, oxygen is produced X is...
An example of a secondary amine is? ...
The gas that can be dried using concentrated tetraoxosulphate (VI) acid is ...
A mixture of iodine and sulphur crystals can be separated by treatment with? ...
The substance often used for vulcanization of rubber is? ...
Which of the following is not a naturally occurring iron ore? ...