Problem: Determine which have noble-gas configurations. Check all that apply.a. Ru3+b. As3−c. Y3+d. Pd2+e. Pb2+f. Au3+

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Noble gases have a completely filled outer p orbital. We need to figure out the electron configurations of all ions and determine if their outer orbital is p and if its completely filled with electrons.

Remember p orbitals hold up to 6 electrons.

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Problem Details

Determine which have noble-gas configurations. Check all that apply.

a. Ru3+

b. As3−

c. Y3+

d. Pd2+

e. Pb2+

f. Au3+