Q5 of 17 Page 24

Symbols (not real symbols) of some atoms are given.


Find the atomic number and mass number of these elements.

For P the atomic number is 8 and the mass number is 17.

For Q the atomic number is 18 and the mass number is 36.


For R the atomic number is 8 and the mass number is 16.


More from this chapter

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3

The mass number of an atom is 31. The M shell of this atom contains 5 electrons.

Draw the Bohr model of the atom.

 4

Bohr models of atoms A, B, C, D are given (Symbols are not real).

a) Write the atomic number, mass number and electronic configuration of the atoms,


b) Among these, which are isotxopes? Why?



 5

Symbols (not real symbols) of some atoms are given.


Which among these are isotopic pairs?

 5

Symbols (not real symbols) of some atoms are given.


Draw the Bohr model of atom Q.