What fourth period element is represented by the dot structure shown? 
A) K
B) Ca
C) Mn
D) Br
E) Co
Correct Answer:
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Q84: Transition metals can also be called
A)s-block elements.
B)p-block
Q85: The number of valence electrons in a
Q86: Valence electrons in the main group elements
Q87: Which group contains only d-block elements?
A)Ni,Pd,Pt
B)Si,Ge,As
C)Ce,Pr,Nd
D)Kr,Xe,Rn
E)Po,Fr,Ac
Q88: Explain how the term "valence electrons" is
Q90: Which group contains only p-block elements?
A)N,S,Br
B)Mn,Cu,Ag
C)K,Mg,Al
D)Ce,Pr,Nd
E)Na,P,Cl
Q91: How many electrons are there in the
Q92: In terms of atomic structure,the common characteristic
Q93: Which of the following is a correct
Q94: An s-block element in the 5th Period
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