Question

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Write the electronic configuration of elements from atomic no. 57 to 81

Answer 1

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Here is your answer

Elements having atomic number 57 to 80 are present in D - Block of the periodic table.

Element with atomic number 81 (Thallium) is present in the P - Block of the periodic table

Elements in D Block have their general electronic configuration as
$(n - 1)d {}^{1 - 10 } \: ns {}^{1 - 2}$
Elements in P Block have their electronic configuration as
$ns {}^{2} np {}^{1 - 6}$
where
n is the principal quantum number.
s,p, d, f are the subshells