Element R has the following successive ionization energies (in kJ mol⁻¹): 1314, 3388,…
CHEMISTRY · Subjective · A Level · Chemistry · Periodicity and periodic trends · Periodicity and periodic trends
Problem
Element R has the following successive ionization energies (in kJ mol⁻¹): 1314, 3388, 5301, 7469, 10 990, 13 330. Its electron affinity is −141 kJ mol⁻¹, its atomic radius is 66 pm, and it exists as a diatomic gas under standard conditions. Identify element R and give one brief reason for your choice that references effective nuclear charge or shielding.