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Chem unit 1

Bohr Model of Atom (excitation, emission) Isotopes - Average Atomic Mass calcula

QuestionAnswer
What is the difference between atomic number, atomic mass and mass number? Atomic number is the p+e, atomic mass is p-n and mass nunber is its mass
Circle the element with the larger radius and explain why. Al or Ar Al, More outer shells
Circle the element/ion with the larger radius Al3+ or Ne Ne
Circle which element has the higher ionization energy and explain why. Na or K Na
Circle the element with the higher electron affinity and explain why. S or Cl Cl
Circle the element with the higher electronegativity and explain why. F or O F
Who is considered the “father: of the periodic table? Mendeleev
Explain how he organized the elements to create the table. grouped elements have similar properties
What is the most reactive metal? Francium
What is the most reactive nonmetal? Fluorine
Explain the 3 factors affecting atomic radius. Valene shells, protons, shielding
Describe and explain the trends in atomic radius as you go down a group in the Periodic Table. they become more reactive
Explain how atomic radius affects the electronegativity of an atom the higher the atomic radius the smaller the electronegativity
Arrange the following elements in order of increasing ionization energy Sr, Cs, S, F, Cs, Sr, S, F
Define ionization energy energy released when a electron is added
define electronegativity electron attracting ability
define electron affinity energy needed to remove a electron from a atom
Created by: Jayme1_3
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