The energy of an electron state has an uncertainty of about 0.500 ...

[scienceeasy]

The energy of an electron state has an uncertainty of about 0.500 eV. What is the uncertainty in the life-time of the level?
 
  A) 1.32  10-15 s
  B) 8.28  10-15 s
  C) 1.32  10-11 s
  D) 8.28  10-11 s
  E) 1.32  10-8 s

Question 2

Consider an atom with four accessible energy levels. What is the maximum number of different wavelengths that could be emitted by such an atom?
 
  A) 7
  B) 4
  C) 6
  D) 5
  E) 8

[bigsis44]

Answer to Question 1

A

Answer to Question 2

C

[scienceeasy]

TYSM

[bdobbins]

Excellent