if each orbital can hold a maximum of 3 electron the number of element is in 4period of periodic table (long form)is
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2nd period: 2s, 2p
no. of orbitals in 2s= 1 (use formula 2l+1)
no. of orbitals in 2p= 3
Total no of orbitals= 1+3=4
Given that, one orbital can hold a maximum no of 3 electrons
Therefore, 4 orbitals can hold = 4 X 3 = 12 orbitals
Answer : 12 electrons
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