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Chemical trends

Chemical trends. Electronegativity. What is the Electronegativity of the following elements? C H O U. Electronegativity. Answers: C : 2.5; H : 2.1, O: 3.5, U: 1.4;. Valence Electrons.

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Chemical trends

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  1. Chemical trends

  2. Electronegativity • What is the Electronegativity of the following elements? C H O U

  3. Electronegativity • Answers: C : 2.5; H : 2.1, O: 3.5, U: 1.4;

  4. Valence Electrons • List the group configuration and number of valence electrons for each of the following elements: Ba, Cs, Te, Xe, Au

  5. Valence Electrons • Answers: • Ba: ns2, 2 • Ce: ns1, 1 • Te: ns2p4, 6 • Xe: ns2p6, 8 • Al: ns2p1, 3

  6. Ionic Radii • Find the Ionic radii of the following elements: Sr, Na, S, O, Cl,

  7. Ionic Radii • Answers • Sr= 118 pm • Na= 102 pm • S= 184 pm • O= 140 pm • Cl= 181 pm

  8. Electron Affinity • What is the electron affinity of the following elements? • Ca, In, C, F, Fr,

  9. Electron Affinity • Answers: • Ca= 0 kj/mol • In= -30 kj/mol • C= -126.3 kj/mol • F= -339.9 kj/mol • Fr = -47.0 kj/mol

  10. Ionization Energy • List in order the largest to smallest ionization energy.(kj/mol) Pd,Ac, Cl, Rn, He

  11. Ionization Energy • Answers: • He = 2372 kJ/mol • Cl = 1251 kJ/mol • Rn = 1038 kJ/mol • Pd =804 kJ/mol • Ac = 490 kJ/mol

  12. Atomic Radii • Page 141 List the five largest Atomic radii elements.

  13. Atomic Radii • Answers: • Francium (270 pm) • Cesium (265 pm) • Rubidium (248 pm) • Potassium (232 pm) • Europium (208 pm)

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