Which element is located in both Group 2 and Period 4?
A) Barium
B) Magnesium
C) Potassium
D) Calcium
Correct Answer:
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Q35: How many neutrons does 58Cr have?
A)35
B)58
C)34
D)36
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Q38: Which option is the correct scientific notation
Q39: Which of the following elements is a non-metal?
A)Lead
B)Zinc
C)Chlorine
D)Lithium
Q40: Which of the following is located in
Q41: H2O is an example of which of
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