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CBSE Notes 2011-2012 » IX-Science-Term2

Structure of the Atom

Atomic models have been improved over the years. Arrange the following atomic models in the order of...

Multiple choice question

Atomic models have been improved over the years.
Arrange the following atomic models in the order
of their chronological order
(i) Rutherford's atomic model
(ii) Thomson's atomic model
(iii)Bohr's atomic model

An atom with 3 protons and 4 neutrons will have a valency of

Multiple choice question

An atom with 3 protons and 4 neutrons will have a
valency of

The electron distribution in an aluminium atom is

Multiple choice question

The electron distribution in an aluminium atom is

Which of the following statement is always correct ?

Multiple choice question

Which of the following statement is always correct ?

The difference between isotopes and isobars

Multiple choice question

The difference between isotopes and isobars

A' has 9 protons, 9 electrons and 10 neutrons. 'B' has 12 protons, 12 electrons and 12 neutrons. For...

Multiple choice question

A' has 9 protons, 9 electrons and 10 neutrons. 'B'
has 12 protons, 12 electrons and 12 neutrons.
Formula between A and B is

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