How many groups and periods are there in the modern periodic table? How do the atomic size and metallic character of elements vary as we move:

(a) down a group and
(b) from left to right in a period

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Solution

There are 18 groups and 7 periods in the modern periodic table.

(a) The atomic size and metallic character of elements increases down a group.

(b) The atomic size and metallic character of elements decreases from left to right in a period.

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Write the number of periods the modern periodic table has. How do the valency and metallic character of elements vary on moving from left to right in a period? How do the valency and atomic size of elements vary down a group?

Q. Write the number of periods and groups in the Modern Periodic Table. How does the metallic character of the elements vary on moving (i) from left to right in a period, and (ii) down a group ? Give reason to justify your answer.

Q. In the modern periodic table, how does the atomic size of the elements vary along the period and down the group? Explain.

(a) How does the size of atoms (atomic size) generally vary in going from left to right in a period of the periodic table? Why does it vary this way?

(b) What happens to the metallic character of the elements as we move from left to right in a period of the periodic table?

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How many groups and periods are there in the modern periodic table? How do the atomic size and metallic character of elements vary as we move: (a) down a group and (b) from left to right in a period

There are 18 groups and 7 periods in the modern periodic table. (a) The atomic size and metallic character of elements increases down a group. (b) The atomic size and metallic character of elements decreases from left to right in a period.

How many groups and periods are there in the modern periodic table? How do the atomic size and metallic character of elements vary as we move:

(a) down a group and
(b) from left to right in a period

There are 18 groups and 7 periods in the modern periodic table.

(a) The atomic size and metallic character of elements increases down a group.

(b) The atomic size and metallic character of elements decreases from left to right in a period.