Question

The atomic number of an element ‘M’ is 26. How many electrons are present in the M-shell of the element in its M3+ state?​

Answer 1

Answer:

The no of electrons is 13 ...

hope it will help you

Answer 2

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M-shell of M+3M+3 ion will have 13 electrons.

$\underline{ \mathbb{{Reason:}}}$

M(26)➡M(23)+3ē

There will be remaining of 23 electrons in the M+3M+3 ion. It seems you are talking of iron (Fe) having atomic number 26 and can lose 03ēs from valence shell as:

Fe(26)➡Fe(23)+3ē

This +3 state of iron can be seen in various compounds like Fe2(SO4)3,FeCl3 etc.

$\underline{ \mathbb{In \: configuration \: principle:}}$

K (kernell) shell has 2

L shell has 8

M shell has 13.