Halophiles Choose one: A. must have 0.2%–5% NaCl levels to grow. B. require halogen elements in large quantities. C. live in the ocean. D. must have 10%–20% NaCl levels to grow.

The problem here is that according to aufbau principle before 3d orbital 4s subshell comes.after filling 3p orbital with electrons you have 4 electrons left, you place two in 4s with opposite spin and the other two in 3d in any of its two orbitals of total five orbitals with the same spin.

Perimeter? wheres the answers

Bis the answerhope it !

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