The Arsenic Ionization Energy is the energy required to remove from atom one mole of electrons with subsequent production of positively charged ion of Arsenic.
As -> As+ + e-
This process can be repeated many times, but the energy cost is increased dramatically. The general equation for the Arsenic is:
AsN+ -> As(N+1)+ + e-
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As -> As1+ = 947 kJ/mol = 226.56 Kcal/mol
\nAs1+ -> As2+ = 1798 kJ/mol = 430.14 Kcal/mol
\nAs2+ -> As3+ = 2735 kJ/mol = 654.31 Kcal/mol
\nAs3+ -> As4+ = 4837 kJ/mol = 1157.18 Kcal/mol
\nAs4+ -> As5+ = 6042 kJ/mol = 1445.45 Kcal/mol
\nAs5+ -> As6+ = 12305 kJ/mol = 2943.78 Kcal/mol
\nAs6+ -> As7+ = 15400 kJ/mol = 3684.21 Kcal/mol
\nAs7+ -> As8+ = 18900 kJ/mol = 4521.53 Kcal/mol
\nAs8+ -> As9+ = 22600 kJ/mol = 5406.70 Kcal/mol
\nAs9+ -> As10+ = 26400 kJ/mol = 6315.79 Kcal/mol
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