Electron affinity is the energy change that occurs _____ a. when one mole of ele

Question

Electron affinity is the energy change that occurs _____ a. when one mole of electrons is added to one mole of atoms in their most stable state. b. when a gas-phase atom or ion in its ground state gains an electron. c. When one mole of electrons are added to one mole of gas-phase atoms or ions. d. when an electron experiences the pull of the nucleus. e. when an atom attracts an electron on another atom to form a chemical bond. Which of the following is quantized? a. the trajectory of a baseball hit from home plate b. the diameter of a redwood tree c. Your age d. the speed of a formula 1 race car e. The number of marbles in a bag Which arrangement is in the correct order of decreasing radii? a. Be > Ba^+ > O^2- b. Na^+ > Cs^+ > I^- c. F^- > Mg^+ > Cs d. Li^+ > Na^+ > K^+ e. As^3- > Br^- > K^+ A covalent bond results when _____ a. electrons are shared between a pair of atoms. b. electrons are transferred from one atom to another atom. c. atoms pool their electrons to form a "sea" of electrons. d. an atom has 8 valence electrons e. atoms have outer electrons with the same principal quantum number. Which of the following types of electromagnetic radiation has the highest frequency? a. visible b. X-rays c. radio waves d. ultraviolet e. infrared Which type of bonding involves the sharing of valence electrons by two atoms? a. polar ionic b. ionic c. metallic d. covalent e. intramolecular Bond length and bond strength are _____ a. arbitrary b. identical c. inversely proportional d. unrelated e. directly proportional.

Explanation / Answer

answer 1

ELECTRON AFFINITY : It is the amount of energy realesed when an electron is added to a neutral atom in gaseous phase to form a ion(negatively charged)

according to above defination option B is correct

please do submit your different answer sepeartely.

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