In the grand state, an element has 13 electrons in its M-shell. The el

1.	In the grand state, an element has 13 electrons in its M-shell. The element is
Answer» Manganese Chromium Nickel Iron Solution :`13e^(-)` in M (3rd) shell means `3s^(2) 3p^(6) 3d^(5)`. Hence complete CONFIGURATION will be `1s^(2) 2S^(2) 2P^(6) 3s^(2) 3p^(6) 3d^(5) 4s^(1) or 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(6) 3d^(5) 4s^(2)` Hence, the element is chromium (Z = 24) or manganes (Z = 25)

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