Refer to the periodic table and predict which element in each of the following pairs has the

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Refer to the periodic table and predict which element in each of the following pairs has the lower ionization energy.

(a) Mg or Si

(b) Pb or Bi 

(c) Ca or Ga 

(d) P or Cl.

Periodic Table:

2 3 4 10 6 3 7 11 Li 6.94 1 IA Na 22.99 19 37 5 Rb K 39.10 al 55 4 87 2 IIA Fr (223) Be 9.01 12 Mg 24.31 Sr

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