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201.
What is the chemical symbol for the element oxygen?
202.
Which of the following elements is a noble gas?
203.
What is the chemical formula for table salt (sodium chloride)?
Explanation:
204.
What is the atomic number of carbon?
205.
What is the chemical formula for water?
206.
Which element is the most abundant in the Earth's crust?
Explanation:
207.
What is the chemical formula for ammonia?
208.
Which of the following is a transition metal?
209.
What is the chemical symbol for gold?
210.
Which of the following compounds is a strong acid?