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Which of the following is correct? (M.S.Q.)
\( \mathrm{P} \)
(A) \( \left[\mathrm{n}_{\mathrm{N}}\right]_{\mathrm{Mg}}=\left[\mathrm{n}_{\mathrm{P}}\right]_{\mathrm{Na}} \)
W
(B) \( \left[\mathrm{n}_{\mathrm{N}}\right]_{\mathrm{Mg}}=\left[\mathrm{n}_{\mathrm{N}}\right]_{\mathrm{Na}} \)
(C) \( \left[\mathrm{n}_{\mathrm{N}}\right]_{\mathrm{Al}}=\left[\mathrm{n}_{\mathrm{P}}\right]_{\mathrm{P}} \)
(D) \( \left[\mathrm{n}_{\mathrm{N}}\right]_{\mathrm{Al}}=\left[\mathrm{n}_{\mathrm{P}}\right]_{\mathrm{Si}} \)

Where \( \mathrm{n}_{\mathrm{N}}= \) number of neutrons \( \mathrm{n}_{\mathrm{P}}= \) number of protons
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