How would you justify the presence of 18 elements in 5th period of the periodic table?
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18 elements
5th period means the elements having 5 shells in their atom.
It means that this period contains elements which have 5 shell in its atom
5th period means the elements having 5 shells in their atom.
It means that this period contains elements which have 5 shell in its atom
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ANSWER :-
The 5th period of the periodic table contains 18 elements . Reason n=5, l=0, 1, 2 , 3 . The order in which the energy of available orbitals 4d, 5s, and 5p increases is 5s<4d<5p and the total number of orbitals available are 9 and thus 18 electrons can be accommodated.
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