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Quiz by Jhoanne Morelos

Grade 9
Philippines Curriculum: Grades K-10 (MELC)

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40 questions
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  • Q1

    The spin quantum number of an electron can be thought of as describing _______

     the number of revolutions the electron makes about the nucleus per second

     whether the electron's charge is positive or negative.

    the direction of electron spin.

    the electron's exact location in orbit.

  • Q2

    How many electrons from the outermost shell does a 4s orbital possess?





  • Q3

    Which set of quantum numbers uniquely defines one of the electrons in an atomic orbital with n = 2 and l = 0?

     n = 2, l = 0, ml = 0, ms = +1 

     n = 2, l = 0, ml = 1, ms = +½

     n = 2, l = 0, ml = 0, ms = +½

    n = 2, l = 0, ml = 1, ms = +1

  • Q4

     What is the electron configuration for nitrogen, atomic number 7? 

     1s 22s2 2p3

    1s2 2s2 2p1

    1s2 2s3 2p2

     1s2 2s2 2p2 3s1

  • Q5

    Which of these d-orbitals contains both paired and unpaired electrons?

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