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Arrange these soluble cations (Na, Ca, K, Mg) in ascending order of abundance of soluble cations found in saline costal soils.

(a) Na>Mg>Ca>K

(b) Mg>Na>Ca>K

(c) K>Mg>Ca>Na

(d) Na>Mg>K>Ca

I have been asked this question during an online exam.

I'm obligated to ask this question of Management of Coastal Saline Soil in chapter Management and Remediation of Problem Soil of Environmental Biotechnology

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Correct option is (a) Na>Mg>Ca>K

The best explanation: Na>Mg>Ca>K is the correct order with respect to abundance of soluble cations found in saline costal soils, as Na is the major component of salt, so, it is found in higher abundance.

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