Explain the general trend in first ionisation energy across period 2 in the periodic table.
- Across period 2, the nuclear charge increases from Li (3+) to Ne (10+) as protons are added to the nucleus. - The electros are removed from the same main energy level and electrons in the same main energy level do not shield each other well. - Therefore, the force of attraction, from the nucleus, on the outer electrons increases from left to right across the period and the outer electron is more difficult to reove for neon. - The neon atom is smaller than the lithium atom and, therefore, the outer electron is closer to the nucleus amd more strongly held.
EA
Related Chemistry IB answers
All answers ▸What mass of carbon dioxide is produced from burning 100 grams of ethanol in oxygen according to this reaction: C2H5OH + 3 O2 --> 2 CO2 + 3 H2O
2HCl (aq)+CaCO3 (s)->H20(l)+CaCl2(aq)+CO2(g). If using 40cm^3 of 2.5mol.dm^-3 Hcl and 5.67g of CaCO3, determine the limiting reagent and how much CO2(g) could be theoretically produced by this reaction.
What are the four different intermolecular forces?
Explain why transition metals form coloured compounds when bonded to a ligand.