Which element is a transition metal in period 4?
A) K
B) Hf
C) Sn
D) Sc
Correct Answer:
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Q12: Which element is not an alkali metal?
A)Li
B)Kr
C)Rb
D)Na
E)All
Q13: The element symbol for manganese is _.
A)M
B)Ma
C)Mg
D)Mn
Q14: The element symbol for sulfur is _.
A)S
B)Su
C)Sf
D)Sl
Q15: Which element is a noble gas?
A)H
B)Ne
C)Pr
D)Ra
E)More than
Q16: Silicon has three naturally occurring isotopes: Si-28,Si-29,and
Q18: What is the atomic number of the
Q19: What is the maximum number of electrons
Q20: Which atom has the largest atomic radius?
A)K
B)Ga
C)Br
D)Rb
Q21: The proper electron-dot symbol for aluminum is
Q22: Which element is chemically similar to lithium?
A)Sulfur
B)Magnesium
C)Iron
D)Lanthanum
E)Potassium
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