Periodic Classification of Elements Class 10 MCQÂ Science
The Russian chemist Mendeleev stated that the properties of elements are the periodic function of their atomic masses.
The Russian chemist Mendeleev stated that the properties of elements are the periodic function of their atomic masses.
Metals occupy the left and the middle parts of the periodic table. On the right side of the periodic table are the nonmetals and the noble gases.
The law of constant composition is applied to a pure chemical compound as it always contains same element combined together in the same definite proportion by weight.
The three dimensional space around the nucleus in an atom where the probability of finding an electron is maximum is known as orbital.
Tetrahedral structure is found in diamond because each carbon atom is attached with four different carbon atoms.
The hydrogen atoms of an acid, which can be partially or completely replaced by an atom or a group of atoms are called Replaceable hydrogen & Acidic hydrogen.
15% alcohol i.e. 15 ml alcohol dissolved and 100ml solution form hence amount of solvent = 85 ml.
A chemical change is one in which the identity of the original substance changes and a new substance or new substances are formed.
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