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प्रश्न
Define:- Molecule
उत्तर
Molecule : Molecule is the smallest unit of a compound (or an element) which always has an independent existance.
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संबंधित प्रश्न
Write the names of the elements present in the :-
Sulphuric acid
Write the names of the elements present in the:-
Glucose
What are orbits or shells ?
What is the maximum number of electrons present in:
1. first shell
2. second shell
3. third shell and
4. fourth shell
Name three non-metals/radicals which have valency -1, -2, and -3.
Write electronic configuration of oxygen, fluorine, sodium, silicon, argon.
An atom has 13 protons and 14 neutrons.
How many electrons would be present in this atom ?
An atom has 13 protons and 14 neutrons.
What is the atomic mass of the atom ?
How is the size of an atom indicated ?
Calculate the number of moles in 12.044 × 1025 atoms of phosphorus.
The electron shell ______ is nearest to the nucleus.
Draw the basic structure of an atom representing its –
- Subatomic particles
- Nucleus
- Orbits or shells.
Select the correct answer to the statement given below:
Imaginary path around the nucleus of an atom in which electrons revolve.
An atom of an element has no electron. Will that atom have any mass or not? Can an atom exist without electron? If so then give example.
In all atoms of an element
The volume occupied by 1 mole of a diatomic gas at S.T.P is ______
Which of the following has maximum number of atoms?
A change in the physical state can be brought about
______ is a substance that is made up of three oxygen atoms chemically combined.
The ______ are combination of atoms of various elements or the same element.
