how many electrons are present in m shell of an element with atomic number 20
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The element having atomic number 20 is calcium(Ca).
The electronic configuration of Calcium is ( 2,8,8,2).
K shell - 2 electrons
L shell - 8 electrons
M shell - 8 electrons
N shell - 2 electrons
Hence , the M shell of an element with atomic number
20 has 8 electrons.
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