Question

Which of the following statements are true about the modern form of the periodic table?

• A. Properties of the elements are the periodic functions of their atomic number
• B. There are 7 periods
• C. There are 18 numbered groups
• D. All of the above

Answer 1

The correct option is D All of the above

The modern periodic table is the tabular arrangement of chemical elements ordered by their atomic number. The rows of the table are called as periods which are 7 in number and the columns are called as groups which are 18 in total.