Science, asked by nasreendayyed123, 10 months ago

35.Write the names given to vertical
columns and horizontal rows in Modern
Periodic Table. How does the metallic
character of elements vary on moving down
a vertical column? How does the size of
atomic radius vary on moving left to right
in a horizontal row? Give reason in support
of your answer in the above two cases.​

Answers

Answered by akhilvinayak03
14

Answer:

Vertical columns are called Groups

Horizontal row are called Periods

There are 7 periods and 18 groups in the Modern Periodic Table.

On moving down in a group , the atomic radius substantially increases and as a result the ionization enthalpy decreases down the group.

This leads to an increased metallic character as the low I.E enables the elements to lose their outermost electrons easily.

On moving left to right in a period, the effective nuclear charge on the atom increases. As a result the electrons are pulled closer to the nucleus, resulting in high IE . So due to the increased force of attraction, the atomic radius tends to decrease along the group.

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Answered by bodakuntalacchanna
3

Answer:

lA groupAlkali metals

llA groupAlkali earth metals

VIA group–Chalcogens

VIIA groupHalogens

VIIIA groupNoble gases

3,4,5,6,7,8,9,10,11,12 groups {B group elements}Transition elements

elements under the periodic table are Lanthanides and Actinides.

As we move left to right metallic nature of elements decreases.

Metallic character increases while non metallic character decreases in a group as we move from top to bottom.

Atomic radius decreases as we move from top to bottom in a group.

Atomic radius increases as we move from left to right.

Hope it works Saniya..............................✌️✌️

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