{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Part J Electronic Configuration, Periodic Table and periodic trends 4 slides per page

Al cl na p b o be n ionization energies group and

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: er than the preceding IE Ionization Energies • Example: Arrange these elements based on their increasing first ionization energies. – Al, Cl, Na, P – B, O, Be, N Ionization Energies Group and element IE1 (kJ/mol) IE2 (kJ/mol) IE3 (kJ/mol) IE4 (kJ/mol) IA Na IIA Mg IIIA Al IVA Si 496 738 578 786 4562 1451 1817 1577 6912 7733 2745 3232 9540 10,550 11,580 4356 Electron Affinity • Electron affinity is the amount of energy released when an electron is added to an isolated gaseous atom to form an ion with a 1- charge. • Electron affinity is a measure of an atom’s ability to form negative ions. • Symbolically: atom(g) + e- → ion-(g) + EA F(g) + e- F-(g) + 328 kJ/mole O(g) + e- O-(g) + 141 kJ/mole 10 1/28/2014 Electron Affinity Electron Affinity Electronegativity • Electronegativity (EN) is a measure of the tendency of an atom to attract electrons to itself when chemically combined with another element. – The most electronegative atom pulls electrons to itself, pulling also the electro...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online