What is the correct electron configuration for the lithium atom?
A) 1s3
B) 2s1
C) 1s12s2
D) 1s22s1
E) 1s22s5
Correct Answer:
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Q2: The elements lithium,sodium,and potassium _.
A)are isotopes of
Q36: The elements sodium,magnesium,and silicon _.
A)are isotopes of
Q43: The maximum number of electrons that may
Q43: Valence electrons are electrons located _.
A)in the
Q44: Which of the following is NOT true
Q45: The atomic mass of an element is
Q46: What is the element with the electron
Q47: A sample of silicon has three naturally
Q51: The electron arrangement of any particular atom
Q52: What element has the electron configuration 1s22s22p63s23p2?
A)carbon
B)oxygen
C)sulfur
D)iron
E)silicon
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