Problem:  Which of the following statements are  true?a. We can sometimes know the exact location and speed of an electron at the same timeb. All orbitals in a given atom are roughly the same sizec. Since electrons have mass, we must always consider them to have particles properties and never wavelike propertiesd. The magnetic quantum number (ml) describes the orientation of the orbitale. All of the above

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 Which of the following statements are  true?

a. We can sometimes know the exact location and speed of an electron at the same time

b. All orbitals in a given atom are roughly the same size

c. Since electrons have mass, we must always consider them to have particles properties and never wavelike properties

d. The magnetic quantum number (ml) describes the orientation of the orbital

e. All of the above

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