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The number of subatomic particles in atoms so far discovered is more than:
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Chemistry
Basic Concepts of Chemistry
Atoms can be evident by the use of electron microscope, field ionization microscope and :
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Chemistry
Basic Concepts of Chemistry
Determination of atomic masses and invention of system of writing symbols was made by :
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Chemistry
Basic Concepts of Chemistry
First atomic theory was put forward by an English school teacher :
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Chemistry
Basic Concepts of Chemistry
Non-metals tend to gain electrons, becoming:
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Chemistry
Basic Concepts of Chemistry
Metals tend to lose electrons, becoming
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Chemistry
Basic Concepts of Chemistry
Atoms and molecules can either gain or lose electrons, forming charged particles called:
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Chemistry
Basic Concepts of Chemistry
Covalent compounds mostly exist in the form of :
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Chemistry
Basic Concepts of Chemistry
Swedish chemist J.Berzelius determined:
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Chemistry
Basic Concepts of Chemistry
The diameter of atoms is of the order
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Chemistry
Basic Concepts of Chemistry
$CO^{+}$ is an example of
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Chemistry
Basic Concepts of Chemistry
When an electron is added to a unipositive ion we get:
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Chemistry
Basic Concepts of Chemistry
The number of atoms present in a molecule determines its :
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Chemistry
Basic Concepts of Chemistry
Matter is defined as anything which occupies space and:
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Chemistry
Basic Concepts of Chemistry
Smallest particle of an element which may or may not have independent existence is known as:
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Chemistry
Basic Concepts of Chemistry
The branch of science dealing with structure, composition and changes in matter and laws and principles which govern these changes is called as:
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Chemistry
Basic Concepts of Chemistry
Number of transitions possible for an electron in the 6th shell are
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Chemistry
Atomic Structure
If an electron jumps from fourth to first orbit, which of the following series will it show?
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Chemistry
Atomic Structure
Brackett series of H-atom is in which of the following regions of electromagnetic spectrum?
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Chemistry
Atomic Structure
When alpha particles are bombarded on beryllium, __________ is formed.
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Chemistry
Atomic Structure
d subshell has
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Chemistry
Atomic Structure
Which quantum number decides energy of orbitals?
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Chemistry
Atomic Structure
Which of the following quantum numbers are for p-subshell?
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Chemistry
Atomic Structure
In a discharge tube, at room pressure there is
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Chemistry
Atomic Structure
Which orbitals always possess same energy
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Chemistry
Atomic Structure
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