An element with an atomic number of 22 has how many electrons in the second principal quantum number level (L shell) ?
A) 22
B) 10
C) 8
D) 2
Correct Answer:
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Q2: Isotopes have _ mass numbers and _
Q3: The nuclear particles that distinguish one element
Q4: The orderly arrangement of elements in the
Q5: A period in the periodic table is
A)represented
Q6: If the photon frequency of electromagnetic radiation
Q8: Groups of the periodic table
A)represent elements with
Q9: The unit of mass is the
A)m/sec.
B)kg.
C)mm.
D)cc.
Q10: In a vacuum, electromagnetic radiation
A)has a velocity
Q11: In the excitation process, electrons in an
Q12: The atomic number is the number of
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