Chemistry – Hard with correct answers.

Across the negative ions in a period the ionic radius _____ becauseANSWERS Decreases, the ions all have the same configuration but the number of protons increases causing the outer shell electrons to be attracted more strongly 2 exceptions when filling up sub shells + whyANSWERS Chromium and copper because less energy is needed when the sub shells are half full or full 2nd Ionisation EnergyANSWERS The energy required to remove one electron from ONE MOLE of GASEOUS IONS with a 1+ charge to produce ONE MOLE of GASEOUS IONS with a 2+ charge Trends in 1st ionisation energy as you go across any group + explanationANSWERS Decreases, although the number of protons increases, the electron being removed is further from the nucleus and has more shielding General trend in 1st ionisation energies as you go across any period + explanationANSWERS Increases, the electrons are taken from the same shells so there is no increase in shielding and the number of protons increases