Which of the following statements regarding bond strength and length is true? a.
ID: 535492 • Letter: W
Question
Which of the following statements regarding bond strength and length is true? a. The length of a bond is the distance between two atoms when the potential energy of attraction between them is zero. b. Energy is released when bonded atoms separate. c. The length of a bond is generally inversely proportional to its strength. d. Bond strength increases as the distance between two atoms decreases e. When multiple pairs of electrons are shared between two atoms, bond strength decreases due to electron repulsions. Electron affinity is the energy change that occurs a. when one mole of electrons are added to one mole of gas-phase atoms or ions. b. when a gas-phase atom or ion in its ground state gains an electron. c. when an electron experiences the pull of the nucleus. d. when an atom attracts an electron on another atom to form a chemical bond. e. when one mole of electrons is added to one mole of atoms in their most stable state.Explanation / Answer
a) False.
Bond length is the distance, where the potential energy is minimum and it will be always negative.
b). False.
Bond formation releases energy. Thus breaking a bond need energy.
c). True.
If strength is incresing, bond length will decrease.
d). True
If strength is incresing, bond length will decrease.
e) False,
multiple sharing of electrons means multiple bonds are formed between these atoms. Triple bond is stronger then double bond which is stronger than single bond
7.
Electron affinity is the energy released when one electron is added to a gaseous atom/ion in the ground state.
b is the correct answe
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