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Order the following elements according to increasing Zeff using periodic trends: Ca, Se, Kr, K. Rank...

Order the following elements according to increasing Zeff using periodic trends: Ca, Se, Kr, K.

Rank from smallest to largest. To rank items as equivalent, overlap them.

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Answer #1

The effective nuclear charge (Zeff) increase from right to left and from bottom to top in the periodic table. The Ca, Se, Kr, K belong to the same period. So that, the rank from smallest to largest is K

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