Question

1. Write the number of (a) protons, (b) neutrons,
(c) electrons in case of following atoms :
(1) Neon [20/10Ne] (ii) aluminium 27/13AL]
3) Fluorine [19/9F] (iv) Potassium [ 39/19K]
2. Write the electronic distribution of the following
atoms along with the name of electron shell.
(a) Sodium ( 23/11Na] (b) Nitrogen [14/7N]
(c) Silicon [29/14si]
(d) Sulphur [32/16]
4. How can you determine number of neutrons in
the nucleus of an atom from the knowledge of
mass number and atomic number?
5. Draw geometric representation of following atoms,
showing clearly, the number of protons, number
of neutrons and number of electrons in various
shells.
(a) Calcium 40/20ca (b) Argon 40/18 Ar
(C) Chlorine 35/17Cl
6. Define isotopes giving examples. State three
properties of isotopes.7. Draw geometric diagrams of three isotopes of
hydrogen.
8. State three ways by which atomic theory of
structure of matter, differs from Dalton's atomic
theory of matter.​

Answer 1

Answer:

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