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2021-06-17

Does atomic radius increase or decrease as you go down the periodic table?

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Does atomic radius increase or decrease as you go down the periodic table?

In general, atomic radius decreases across a period and increases down a group.

How does atomic radius increase on the periodic table?

Atomic radius decreases from left to right within a period. This is caused by the increase in the number of protons and electrons across a period. Atomic radius increases from top to bottom within a group. This is caused by electron shielding.

Does atomic radius increase from top to bottom?

The atomic radius of atoms generally increases from top to bottom within a group. As the atomic number increases down a group, there is again an increase in the positive nuclear charge. However, there is also an increase in the number of occupied principle energy levels.

Why does atomic size generally increase as you move down a group of the periodic table and decrease as you move from left to right across a period?

Why does atomic size generally increase as you move down a group of the periodic table and decrease as you move from left to right across a period? As you go from top to bottom, your increasing 1 energy level and the shielding affect comes into place, allowing atomic size to increase.

How do atomic radii vary in a group and period?

Answer: In general, the atomic radius decreases as we move from left to right in a period with an increase in nuclear charge of the element. The atomic radius increases when we go down a group because of the addition of extra shell.

Which group has largest atomic size?

Answer. Atomic radii vary in a predictable way across the periodic table. The atomic radius increases from top to bottom in a group, and decreases from left to right across a period. Thus, helium is the smallest element, and francium is the largest.

How does ionization energy vary in a period and in a group?

Ionization energy increases from left to right in a period and decreases from top to bottom in a group.

How does Valency vary in group and period?

In a group the valency of an element remains constant while in a period it increases from left to right.

How does Valency vary in a period from left to right?

Valency increases from 1 to 4 and then reduces to zero when we move from left to right across a period. Number of valence electrons increases from 1 to 8 when we move from left to right across a period.

How does Valency of an element vary across a period from left to right?

On moving from left to right in the periodic table, valency increases up to 4 and then decreases. On moving across a period atomic size decreases because of the electron increases by 1 whereas, the number of valence shell remains the same. Therefore as a result of an increase in nuclear charge, atomic radius decreases.

How does the Valency vary in a period from left to right and group from top to bottom?

(a) Valency remains same on moving from top to bottom in a particular group. This is because the outermost electronic configuration of all the elements in a group remains same.

How do Valency and metallic character vary down a group?

So, tendency to lose electrons decreases. Hence, metallic character decreases. On moving down the group, the valence shell electrons remain the same. Therefore, valency of the atom does not change in a group.

How do atomic radius and Valency vary down a group Why?

Atomic radius increases from top to bottom within a group. This is caused by the addition of a new shell. In a group, the number of valence electrons does not change. Hence, all the elements of one group have the same valency.

How do you think the tendency to lose electrons will change in a group?

(a) On moving down a group, the number of shells increases at each succeeding element. As a result, the valence electrons lies farther away from the nucleus. Therefore, the force of attraction between nucleus and the electrons decreases and tendency to lose electrons increases down the group.

What happens to tendency to gain electrons in a period?

Tendency to gain electrons increases as we go from left to right in a period because the effective nuclear charge increases and the atomic radius decreases.

What is the tendency to lose electrons called?

Text Solution. Electronegativity.

How does the tendency to lose electrons change as we go down in Group 1 of the periodic table why does it change this way?

As we go down in group 1, one more electron shell is added at every stage and the size of the atom increases. The valence electrons become more and more away from the nucleus and hold of the nucleus on valence electrons decreases.

How does the tendency to gain electrons change as we go down in group 16 of the periodic table?

when we go down the 16th group of the periodic table,the tendency to gain electrons goes on decreasing. The tendency to gain electrons (electronegativity) decreases as the atomic radius increases due to the increase in number of shells. This results in decrease in effective nuclear charge.

What happens to metallic character down the group?

The metallic character increases as you go down a group. As we move across the periodic table, there is an increasing tendency to accept electrons (non-metallic) and a decrease in the possibility that an atom would give up one or more electrons.

How will this tendency change in a period?

a) The tendency to lose electrons decreases from left to right across the periods. This is because the number of valence electrons goes on increasing from left to right across the period. So, the nuclear force to hold the valence electrons decreases and the tendency to lose the valence electrons increases.

How does the tendency to gain electrons change as we move across a period in the modern periodic table?

Solution. As we move from left to right across a period in the periodic table, the tendency to gain electron increases. On moving from left to right across a period in the periodic table, there is an increase in the nuclear charge of the elements. Hence, the tendency to gain electrons increases.

How the tendency to lose electrons change as we go from left to right across a period of the periodic table?

The tendency to lose electrons decreases as we go from left to right across the periodic table. This happens because the atomic size decreases from left to right, and the force of the nuclear attraction on the outermost electron increases. So, it requires more energy to lose electrons.

What happens to the metallic character in a period from left to right?

Solution : (1) Metals have a tendency to loose the valence electrons to form cations. This tendency of an element is called the metallic character of the element. Thus, metallic character goes on decreasing within a period from left to right.

Which is the shortest period in the modern periodic table?

first period

How do you tell which element is the most metallic?

You can predict the metallic character of an element using the periodic table.

  1. Metallic character increases as you move down a group (column) of the periodic table.
  2. Metallic character decreases as you move from left to right across a period (row) of the periodic table.