chemistry
posted by Amanda .
Use Equation 7.1 and assuming that core electrons contribute 1.00 and valence electrons contribute nothing to the screening constant, S, calculate Zeff} for these two ions. Express your answers as integers. Enter your answers numerically separated by a comma.
Equation 7.1: Zeff=ZS
Zeff Cl, Zeff K+

chemistry 
John
Cl => Atomic number 17  10 (Core electrons from [Ne] = 7
K+ => Atomic Number 19  18 (Core electrons fom [Ar] = 1
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