Which of the following statements describes a correct step in the formation of an ionic bond between sodium and chlorine?
1. Removing an electron from sodium (ionization energy) will provide energy for ionic bond formation
2. Adding an electron to chlorine (electron affinity) will require energy
3. The Coulombic potential between the ions (lattice energy) will release energy
4. The Coulombic potential between the ions (lattice energy) will require energy
1) false, removing electron from sodium requires energy.
2) false, adding an electron to chlorine releases energy.
3) true, the attraction between two oppositely charged ions releases energy.
4) false, it releases energy not requires.
So, the correct step is the third statement.
Comment if any doubts.
Which of the following statements describes a correct step in the formation of an ionic bond...
The C1-C1 bond energy is 243 kJ/mol. Therefore the breaking of the bond between chlorine atoms should require the absorption of 243 kJ per mote of Cl_2 formed. should require the absorption of486 kJ per mole of Cl_2 formed should result in the release of 243 kJ per mole of Cl_2 formed. should result in the release of 486 Id per mole of Cl_2 form A reactive element with a relatively high electronegativity would be expected to have a relatively...
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D 3. The "driving force" that makes the formation of an ionic compound energetically favorable is: the ionization energy of the metal. the electron affinity of the nonmetal. the formation of the crystal lattice. the exchange of core electrons between the atoms. the change of the atoms from solid into gas state.
Sodium fluoride (NaF) is a molecule formed by an ionic bond. a. The electron affinity of F is 3.40 eV and the ionization energy of Na is 5.14 eV. What is the transfer energy associated with this bond? b. The equilibrium separation of the Na and F atoms in the molecule is r_0 = 0.193 nm. What is the electrostatic potential energy of the atoms? c. The measured dissociation energy of NaF is 4.99 eV. Using the results above, what...
Select which process describes the following energy changes. (Ionization energy, electron affinity, bond enthalpy, or standard enthalpy of formation A. F(g) + e- => F-(g) B. F2(g) => 2F(g) C. Na(g) => Na+(g) + e- D. Na(s) + 1/2F2(g) => NaF(g)
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19. Which of the following statements regarding ionic compounds is correct? A) Ions are held together in an ionic lattice by covalent bonds. B) The crystal structure of a given compound does not depend on the sizes and number of ions in a formula unit of the compound. C) Ionic compounds tend to have low melting points. D) Ionic compounds are formed when two metals react. E) In forming an ionic compound from its elements, one element transfers one or...
1
2. for molecules CS2 and CH3F
a.describe its lewis structure
b.the kind of orbitals used by the central atoms to bond
c.polarity
d.approximate geometry
3.explain the formation of sigma and phi bonds in the
XeO3.molecule illustrate its structure and explain its
polarity
4.explain why
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b. Boiling point HF> HCl but CF4 <CCl4
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