Question

9.
How many electrons can the M shell accommodate?
(a) Two (b) Eight (c) Eighteen
(d) Thirty
Which of the following rules is not obeyed while filling the atomic orbitals​

Answer 1

$\huge{\bf{\green{\mathfrak{Question:-}}}}$

• 9. How many Electrons can the M shell accommodate?
• (a) Two
• (b) Eight
• (c) Eighteen
• (d) Thirty

$\huge {\bf{\orange{\mathfrak{Answer:-}}}}$

• M shell is the 3 orbit from the nucleus.

• Therefore, Number of Electrons in M shell = 2n² = 2 * 3² = 2 * 9 = 18. [ Here, In this problem n = 3 ]

• M shell can accommodate 18 Electrons.

$\huge{\bf{\red{\mathfrak{Conclusion:-}}}}$

• $\boxed{\therefore{Correct \: \: option \: \: is \: \: (c) \: \: Eighteen \: \: [18]}}$

$\huge{\bf{\purple{\mathfrak{More \: Information:-}}}}$

• Number of orbits in a shell is given by the formula - 2n².

• Refer the attached picture for orbits.

Answer 2

Answer:

Question :-

$\longmapsto$ How many electrons can the M-shell accommodate ?

(a) Two

(b) Eight

(c) Eighteen

(d) Thirty

Answer :-

$\leadsto$ The maximum number of electrons that can be accommodate in a shell.

As we know that,

$\mapsto$ $\sf\boxed{\bold{2{n}^{2}}}$

Then,

• n = 3

↦ $\sf 2{(3)}^{2}$

↦ $\sf 2 \times 3 \times 3$

↦ $\sf 6 \times 3$

➠ $\sf\bold{\red{18}}$

$\therefore$ M-shell can accommodate 18 electron.

☛ (c) Eighteen electron can the M-shell accommodate.

Hence, the correct options is option no (c) Eighteen.

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