Q. 335.0( 2 Votes )

(i) Draw the atom

Answer :

(i) Magnesium: Symbol = Mg


Atomic number = 12


Protons = 12


Electrons = 12


Electronic configuration = 2, 8, 2


Atomic structure:



Silicon: Symbol = Si


Atomic number = 14


Protons = 14


Electrons = 14


Electronic configuration = 2, 8, 4


Atomic structure:



Sulphur: Symbol = S


Atomic number = 16


Protons = 16


Electrons = 16


Electronic configuration = 2, 8, 6


Atomic structure:



(ii)



Atomic number that can be determined from the atomic structure is 13


Mass number is 13 + 14 = 27


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