امتحان كيمياء عامة

An electron (X) has the following quantum numbers (n = 3, l = 2, ml = -1, ms = -½). What are the quantum numbers for the electron (y) that has the same energy as electron (x) but differs in its spin?

• (n = 3, l = 2, ml = -1, ms = -½)

• (n = 3, l = 2, ml = -1, ms = +½)

• (n = 2, l = 1, ml = -1, ms = -½)

• (n = 3, l = 3, ml = 1, ms = -½)

Which of the following quantum numbers contains an error?

• (n = 3, l = 2, ml = -1, ms = -½)

• (n = 6, l = 2, ml = +2, ms = +½)

• (n = 1, l = 1, ml = +1, ms = -½)

• (n = 3, l = 1, ml = -1, ms = -½)

What is the maximum number of electrons that can agree in the principal, secondary, and magnetic quantum numbers in the P subshell?

• 6

• 7

• 2

• 3

If the following four quantum numbers (n = 3, l = 2, ml = +2, ms = +½) represent the last electron in the atom of element (X), what is the atomic number of element (X)?

• 24

• 25

• 26

• 23

If the magnetic quantum number of an orbital equals (-2), then this orbital can exist in the level .......

• s

• d

• f

• (b) and (c) together

The number of orbitals in each principal energy level (n) equals ..........

• 2n²

• 3n²

• n-1

• n²

The symbols s, p, d, f represent .............

• Principal energy levels

• Actual energy levels

• The number of orbitals contained in the subshell

• The number of unpaired electrons

When (n = 2), one of the possible values of the secondary quantum number is ..........

• 2

• 0

• -2

• ½

The maximum value of the magnetic quantum number that one of the electrons in the principal level can take is....... M

• +2

• +2

• +4

• +5

When the magnetic quantum number equals (0), the number of possible values of (l) ...... values.

• 4

• 2

• 0

• zero