The atomic number of an element is 18.(a)write the subshell of electronic configurations .(b) find out the block and period of this element?
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The atomic number of an element is 18.(a)write the subshell of electronic configurations .(b) find out the block and period of this element?
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a. the subshell of electronic configuration is 1s^2 2s^2 2p^6 3s^2 3p6.
b. the period of this element is 17 and the block of this element is p block .
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