The correct decreasing order for metallic character is (a) \( \mathrm{Na}\mathrm{Mg}\mathrm{Be}\...

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The correct decreasing order for metallic character is
(a) \( \mathrm{Na}\mathrm{Mg}\mathrm{Be}\mathrm{Si}\mathrm{P} \)
(b) \( \mathrm{P}\mathrm{Si}\mathrm{Be}\mathrm{Mg}\mathrm{Na} \)
(c) \( \mathrm{Si}\mathrm{P}\mathrm{Be}\mathrm{Na}\mathrm{Mg} \)
(d) \( \mathrm{Be}\mathrm{Na}\mathrm{Mg}\mathrm{Si}\mathrm{P} \)
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