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5.2 Chemistry
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501.
What is a chemical bond?
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502.
How does the periodic table help predict element behavior?
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503.
How does atomic size influence chemical bonding?
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504.
What makes halogens strong oxidizing agents?
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505.
How does electronegativity help predict polarity of molecules?
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506.
What are typical reactions of alkali metals with water?
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507.
Why do elements in the same group have similar properties?
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508.
How does valence electron configuration determine reactivity?
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509.
Why is graphene important in modern technology?
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510.
What are the properties of diamond compared to graphite?
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511.
What are the allotropes of carbon?
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512.
What are allotropes?
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513.
Why do transition metals form complex ions?
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514.
Why do transition metals form colored compounds?
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515.
What is the oxidation state trend in transition elements?
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516.
What are f-block elements used for?
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517.
What is actinide contraction?
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518.
What is its effect on the periodic table?
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519.
What is lanthanide contraction?
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520.
Why do lanthanides show similar chemical properties?
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521.
Why is gold yellow and mercury liquid at room temperature?
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522.
What are relativistic effects in heavy elements?
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523.
What is inert pair effect?
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524.
What is diagonal relationship?
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525.
How do periodic trends predict acid-base behavior of oxides?
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526.
How do periodic properties help in predicting bond type?
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527.
What is non-metallic character and how does it vary?
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528.
What is metallic character and how does it vary?
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529.
Why does reactivity decrease down the halogen group?
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530.
Why are alkali metals highly reactive?
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531.
How do periodic trends affect chemical reactivity?
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532.
Why are d-block elements good catalysts?
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533.
What are actinides?
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534.
What are lanthanides?
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535.
What are inner transition elements?
-
536.
What are transition metals?
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537.
Why are noble gases chemically inert?
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538.
What are noble gases?
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539.
What are halogens?
-
540.
What are alkaline earth metals?
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541.
What are alkali metals?
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542.
How does nuclear charge affect periodic trends?
-
543.
What is shielding effect?
-
544.
How does electronegativity vary in groups and periods?
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545.
What is electronegativity?
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546.
electron affinity, atom, anion, periodic trend, reactivity
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547.
What is electron affinity?
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548.
Why is ionization energy lower for alkali metals?
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549.
How does ionization energy change across the periodic table?
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550.
What is ionization energy?
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551.
How does ionic size vary for cations and anions?
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552.
What is ionic radius?
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553.
How does atomic radius change down a group?
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554.
How does atomic radius vary across a period?
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555.
What is atomic radius?
-
556.
What is the significance of long-form periodic table?
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557.
What are blocks (s, p, d, f) in the periodic table?
-
558.
What is meant by periodicity?
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559.
What are groups and periods?
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560.
How is the modern periodic table arranged?
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561.
What is modern periodic law?
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562.
What is Mendeleev’s periodic law?
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563.
Who created the first periodic table?
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564.
What is atomic mass unit (amu)?
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565.
What is molar mass?
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566.
What is relative atomic mass?
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567.
What are isobars?
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568.
What are isotones?
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569.
What are isotopes?
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570.
What is mass number?
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571.
What is atomic number?
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572.
What are the charges and masses of subatomic particles?
-
573.
Why do electrons fill lower energy orbitals first?
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574.
What is noble gas configuration?
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575.
What is electronic configuration?
-
576.
What is Hund’s rule of maximum multiplicity?
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577.
What is Pauli’s exclusion principle?
-
578.
What is the Aufbau principle?
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579.
What is the spin quantum number?
-
580.
What is the magnetic quantum number?
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581.
What is the azimuthal quantum number?
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582.
What is the principal quantum number?
-
583.
What are quantum numbers?
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584.
What is the significance of Schrödinger’s equation?
-
585.
What are the shapes of s, p, d, and f orbitals?
-
586.
What is an atomic orbital?
-
587.
How does the quantum mechanical model differ from Bohr’s model?
-
588.
What is the limitation of Bohr’s model?
-
589.
What are the main postulates of Bohr’s atomic model?
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590.
How did Rutherford refine the atomic model?
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591.
What is Thomson’s plum pudding model?
-
592.
What conclusions were drawn from Rutherford’s experiment?
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593.
What was Rutherford’s gold foil experiment?
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594.
What experiment led to the discovery of the electron?
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595.
Who discovered the neutron?
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596.
Who discovered the proton?
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597.
What is the significance of the discovery of the electron?
-
598.
What were the limitations of Dalton’s atomic theory?
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599.
What was Dalton’s atomic theory?
-
600.
How was the concept of atom first proposed?