Elements become larger in atomic radius because they have an increased number of electrons, which increases the level of shielding, which causes the nuclear influence to become less strong on the outer level of electrons allowing them to space farther apart.
The atomic numbers of the elements down a group increase. this means, more electrons. More electrons mean more shells. More shells mean larger radius. Larger radius is nothing but larger size. Thus, the number of electrons or shells is the reason why the size of the atom of elements increase down the group.
In the periodic table, elements that are relatively larger in size appear in the bottom left corner. This is because the size of an atom increases as you move down a group due to the addition of energy levels.
Moving down a group, the elements will have the same number if valence electrons. Tis will give them similar properties, such as the Noble Gases, or the extreme reactivity of Group I metals. Moving across a period, elements will begin to resemble each other less and share fewer properties the further apart they are in the row.
The reactivity is increasing goinng down in the group.
An atom gets larger as you go down a group because each successive element in the group has an additional energy level of electrons compared to the previous element. This extra energy level increases the distance of the outer electrons from the nucleus, leading to a larger atomic radius.
The atomic numbers of the elements down a group increase. this means, more electrons. More electrons mean more shells. More shells mean larger radius. Larger radius is nothing but larger size. Thus, the number of electrons or shells is the reason why the size of the atom of elements increase down the group.
get larger
because new shell are being added as we move down the group and the electron is being far away from the nucleus so the attraction bettween the nucleus and the electron is smaller It means that their is a less use of ionisation energy . Therefore, atomic radius increase down the group.
The trend in atomic radii as you move down Group 1A elements is partially due to the increase in the number of electron shells or energy levels. As you move down the group, each subsequent element has an additional electron shell, leading to an overall larger atomic size.
The p-block elements show a trend in increasing atomic size and decreasing electronegativity as you move down a group. They also exhibit an increase in metallic character and reactivity towards metals, along with a decrease in ionization energy moving down the group.
In the periodic table, elements that are relatively larger in size appear in the bottom left corner. This is because the size of an atom increases as you move down a group due to the addition of energy levels.
Moving down a group, the elements will have the same number if valence electrons. Tis will give them similar properties, such as the Noble Gases, or the extreme reactivity of Group I metals. Moving across a period, elements will begin to resemble each other less and share fewer properties the further apart they are in the row.
the ionization energy is increased because of electronegativity when we move down the group the electronegativity is decrees who hold all electrons hardly to gather that's why the electrons loose easily and become an ion.
Atomic radius increases down a group. Metallic character also increases down the group.
When moving down a group, the number of valence electrons do not change. This similarity yields the elements in the same groups to have same chemical properties. For example, elements in group 17 obtain one electron to stabilize as -1 ion.In a group, all the elements have a same number of valence electrons. So their chemical properties are equal. But the physical properties vary.Valence electrons are the electrons in outermost shell.The valence electrons remain same in a group. For example-Group-1 elements have 1 valence electron.
As we move down the group ,the electrons in the valence shell remains constant but the number of shells increases by one.size of the element increases down the group .elements are more electro-positive as we move down the group so elements at the bottom are more electro-positive than those at the top.as the size of the elements increases the nuclear charge on the elements decreases.due to less nuclear charge shielding effect decreases down the group.
The reactivity is increasing goinng down in the group.