Which of the following gives the correct number of elements in each of the first six periods in the periodic table?
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Q25: Which of the following is the best
Q26: One of the main features of Dalton's
Q27: Two natural isotopes exist for silver.51.83% of
Q28: Which of the following is correct for
Q29: Calculate the atomic mass of the element
Q31: Which of the following statements is false?
A)The
Q32: The chemical symbol of argon is Ar.An
Q33: Copper has two naturally occurring isotopes with
Q34: One of the main features of Dalton's
Q35: Which of the following features of Dalton's
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