(a)
Interpretation:
The ionization energy of rubidium when light of given wavelength ejects electrons at velocity of
Concept introduction:
Ionization energy:
In a gaseous state isolated neutral atom, the amount of energy required to eject an electron from outermost shell is known as ionization energy. Ionization energy increases from left to right across periods due to increase of effective nuclear charge. Ionization energy decreases down the group due to addition of electrons enters into new orbital which is far from nucleus.
(b)
Interpretation:
The ionization energy of potassium when light of given wavelength ejects electrons at velocity of
Concept introduction:
Ionization energy:
In a gaseous state isolated neutral atom, the amount of energy required to eject an electron from outermost shell is known as ionization energy. Ionization energy increases from left to right across periods due to increase of effective nuclear charge. Ionization energy decreases down the group due to addition of electrons enters into new orbital which is far from nucleus.
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General Chemistry: Atoms First
- The electron affinity of the lutetium atom (element 71) was measured using the technique of photoelectron spectroscopy with an infrared laser (the essay on p. 310 describes this instrumental method, using X rays). In this experiment, a beam of lutetium negative ions, Lu, was prepared and irradiated with a laser beam having a wavelength at 1064 nm. The energy supplied by a photon in this laser beam removes an electron from a negative ion, leaving the neutral atom. The energy needed to remove the electron from the negative ion to give the neutral atom (both in their ground states) is the electron affinity of lutetium. Any excess energy of the photon shows up as kinetic energy of the emitted electron. If the emitted electron in this experiment has a kinetic energy of 0.825 eV, what is the electron affinity of lutetium?arrow_forwardHow many unpaired electrons are there 111 the following ions? (a) V3+(b) Sn4+(c) I-(d) W4+arrow_forwardUsing data from the text, determine the following values (justify your answer): a. the electron affinity of Mg2+ b. the ionization energy of CI. c. the electron affinity of Cl+ d. the ionization energy of Mg (electron affinity of Mg = 230 kJ/mol)arrow_forward
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