Mg²⁺ is preferred in photosynthesis by chlorphyll because · ABC26IN0300
Subject: Inorganic Chemistry · Chapter: Bioinorganic Chemistry · Topic: Bioinorganic – General · Exam: GATE 2005-2021 · Marks: 2 · Difficulty: Easy
$\mathrm{Mg}^{2+}$ is preferred in photosynthesis by chlorphyll because
(a)it has strong spin-orbit coupling
(b)it has weak spin-orbit coupling
(c)it is a heavy metal
(d)it binds strongly with chlorophyll
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
Light Mg²⁺ has weak spin–orbit coupling, so the excited singlet does not cross rapidly to the triplet and energy transfer is efficient (b).
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