Question

What is the binding energy (in J/mol or kJ/mol) of an electron in a metal whose threshold frequency for photoelectrons is 2.50 x 10^14 /s? [c = 2.9979 x 10^8 m/s; h = 6.626 x 10^-34 J·s; Avogadro's number NA = 6.022 x 10^23] *The numbers (with a sign) in parentheses are superscripts. 99.8 kJ/mol 1.66 x 10(-19) J/mol 7.22 x 10(17) kJ/mol 1.20 x 10(-6) J/mol 2.75 x 10(-43) J/mol

          What is the binding energy (in J/mol or kJ/mol) of an electron in a metal whose threshold frequency for photoelectrons is 2.50 x 10^14 /s?

[c = 2.9979 x 10^8 m/s; h = 6.626 x 10^-34 J·s; Avogadro's number NA = 6.022 x 10^23]

*The numbers (with a sign) in parentheses are superscripts.

99.8 kJ/mol
1.66 x 10(-19) J/mol
7.22 x 10(17) kJ/mol
1.20 x 10(-6) J/mol
2.75 x 10(-43) J/mol

What is the binding energy (in J/mol or kJ/mol) of an electron in a metal whose threshold frequency for photoelectrons is 2.50 x 10^14 /s?

[c = 2.9979 x 10^8 m/s; h = 6.626 x 10^-34 J·s; Avogadro's number NA = 6.022 x 10^23]

*The numbers (with a sign) in parentheses are superscripts.

99.8 kJ/mol
1.66 x 10(-19) J/mol
7.22 x 10(17) kJ/mol
1.20 x 10(-6) J/mol
2.75 x 10(-43) J/mol

Added by Miguel -Ngel T.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Shaiju T

04/11/2022

Step 1

50 x 10^14 Hz using the formula E = h * f, where E is the energy, h is Planck's constant (6.626 x 10^-34 J s), and f is the frequency. E = 6.626 x 10^-34 J s * 2.50 x 10^14 Hz E = 1.6565 x 10^-19 J Show more…

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What is the binding energy (in J/mol or kJ/mol) of an electron in a metal whose threshold frequency for photoelectrons is 2.50 x 10^14 Hz? [c = 2.9979 x 10^8 m/s; h = 6.626 x 10^-34 J s; Avogadro's number NA = 6.022 x 10^23] *The numbers (with a sign) in parentheses are superscripts.