A cesium (Cs) atom has an atomic number of 55 and one electron in its outer shell. Considering the data in Figure 1 and Figure 2, what electronegativity value would you expect it to have, and what kind of bond is it likely to form with a chlorine atom? Explain your reasoning.

I’m not sure what your trying to say here.. can you clarify again?

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.

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