On going down a main sub-group in the periodic table (example Li to Cs in IA or Be to Ra in IIA), the expected trend of changes in atomic radius is a

Continuous increase

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Continuous decrease

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Periodic one, an increase followed by a decrease

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A decrease followed by an increase

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Solution

The correct option is A
Continuous increase

The size of the atom continuously increases down any group as the number of shells keeps increasing.

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On going down a main sub-group in the periodic table (example Li to Cs in IA or Be to Ra in IIA), the expected trend of changes in atomic radius is a

On going down a main subgroup in the periodic table ( example Li to Cs in IA or Be to Ba in II A) the expected trend of change in atomic radius is a:

Q. Fill in the blanks in the following statements:

(a) The horizontal rows in a periodic table are called ...............
(b) In going across a period (right to left) in periodic table, the atomic size of the atom ...............
(c) On moving form right to left in the second period, the number of valency electrons ...............
(d) On going down in a group in the periodic table, the metallic character of elements ...............
(e) The tendency to gain an electron ............... on moving down in a group of the periodic table.

What happens to atomic radius on going from left to right in a period in a periodic table?

(a) What are the periods and groups in a periodic table? Give two characteristics of each.

(b) In terms of electronic configurations, explain the variation in the size of the atoms of the elements belonging to the same period and same group.

$\begin{matrix} L i & B e N a K R b C s F r & R a \end{matrix}$

(i) What happens to the size of atoms?

(ii) What happens to their metallic character?

(d) Name two properties of elements whose magnitudes change when going from top to bottom in a group of the periodic table. In what manner do they change?

(e) Rewrite the following statement after correction, if necessary :

Groups have elements with consecutive atomic numbers.

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On going down a main sub-group in the periodic table (example Li to Cs in IA or Be to Ra in IIA), the expected trend of changes in atomic radius is a

The correct option is A Continuous increase The size of the atom continuously increases down any group as the number of shells keeps increasing.

The correct option is A
Continuous increase

The size of the atom continuously increases down any group as the number of shells keeps increasing.