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प्रश्न
Rewrite the given sentence in correct form.
Elements contain two or more kind of atoms and compounds contain only one kind of atom.
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उत्तर
Elements contains two or more kinds of atoms and compounds contains two or more kinds of elements.
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संबंधित प्रश्न
WRITE SHORT ANSWER
What is radioactivity?
Fill in the blank
An ion with negative charge is called _______
Define: Mass number
Give the charge and the mass of an electron, proton and neutron present in an atom ?
Name three non-metals/radicals which have valency -1, -2, and -3.
Write electronic configuration of oxygen, fluorine, sodium, silicon, argon.
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is such a particle called ?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
Does the particle have an excess of electrons or a deficiency of electrons ?
Fill in the blank
If an atom gains an electron, it is called an _______
Fill in the blank
A charged particle is called an _____
What are the building blocks of matter ?
For the symbols H, D and T, write the subatomic particles (protons, neutrons and electrons) found in each one of them.
Compare:
Chlorine atom and chloride ion, with respect to
Atomic structure
Electrical state
The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of aluminium
The basic unit of matter is ______.
The volume occupied by 1 mole of a diatomic gas at S.T.P is ______
Atoms of different elements having the same number of ______ are called isotones.
Give the salient features of “Modern atomic theory”.
A sample of vitamic C is known to contain 2.58 ×1024 oxygen atoms. How many moles of oxygen atoms are present in the sample?
The most abundant type of atom is the universe is ______.
