What is the chemical symbol for the group 6A (16) element that lies in period 4?
A) Cr
B) Hf
C) W
D) Ti
E) Se
Correct Answer:
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Q38: Which of the following elements are the
Q39: Which one of the following groups does
Q40: When an atom is represented by the
Q41: In the ionic compound with the general
Q42: Which of the following ions occurs commonly?
A)N
Q44: Which of the following compounds is ionic?
A)PF
Q45: What is the name of Na2O?
A)Disodium monoxide
B)Sodium
Q46: Barium fluoride is used in embalming and
Q47: The colorless substance, MgF2, is used in
Q48: Which one of the following is a
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