a. 1s^2 b. 1s^22s^22p^6 In which group and period of the periodic table they are placed?
The electronic configuration of some elements are given below :
a. 1s2
b. 1s22s22p6
In which group and period of the periodic table they are placed?
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1 Answers
a. 1s2
Here,
n = 1.
Therefore,
The element belongs to the 1st period.
The outer electronic configuration 1s2 corresponds to the maximum capacity of 1s, the complete duplet.
Therefore,
The element is placed at the end of the 1st period in the group 18 of inert gases in the modem periodic table,
b. 1s22s22p6
Here,
n = 2.
Therefore,
The element belongs to the 2nd period.
The outer electronic configuration 2s2 2p6 corresponds to complete octet.
Therefore,
The element is placed in the 2nd period of group 18 in the modem periodic table.
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