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The size of an atom refers to its atomic radius. Atomic radius generally increases down a group. This is because the number of energy levels increase down a group with each additional period. Each of the subsequent energy levels are larger than the last, increasing the distance of the electrons from the nucleus, which increases the atomic radius.
Atomic radius generally decreases across a period. This is because electrons are being added to the same energy level at the same time that protons are being added to the nucleus. This creates a stronger force of attraction by the nucleus for the electrons, which pulls the electrons closer to the nucleus, decreasing the atomic radius.
It is important to note that the periodic trends are not laws. There are exceptions to the general trends in both the representative elements and the transitional elements.
What else can I help you with?
What is the Group trend Atomic radius?
The group trend for atomic radius is that it tends to increase down a group in the periodic table. This is because as you move down a group, the number of electron shells increases, leading to a larger atomic radius. Additionally, the effective nuclear charge decreases down a group, which also contributes to the increase in atomic radius.
What is a periodic trend?
one should look for predictable changes and patterns
What trend do you see in the relative electronegativity values of elements within a group?
In a group, electronegativity tends to decrease as you move down the periodic table. This is due to the increase in atomic size and shielding effect, which reduce the attraction of the nucleus for electrons in outer shells.
What is the trend of effective nuclear charge down a group in the periodic table?
The trend of effective nuclear charge down a group in the periodic table generally decreases.
Which atom has larger atomic radius Rb or Xe?
Xe has a larger atomic radius than Rb because atomic radius generally increases from top to bottom within a group in the periodic table. Xe is located below Rb in the periodic table, so it has more electron shells, resulting in a larger atomic radius.
Can you describe the general trend in atomic radius in group 2A?
In the group 2 (IUPAC name) of the periodic table the atomic radius increase from beryllium to radium.
What is the trend for atomic radius horizontally and vertically on the periodic table?
Horizontally: decreasing from left to right.Vertically: increasing from top to bottom.
What is the trend that the elements on the periodic table abide by?
Elements on the periodic table follow a trend where their properties show a periodic repetition based on their atomic number. This trend is known as periodicity and is the basis for organizing elements into groups and periods based on their similar characteristics.
What is the Group trend Atomic radius?
The group trend for atomic radius is that it tends to increase down a group in the periodic table. This is because as you move down a group, the number of electron shells increases, leading to a larger atomic radius. Additionally, the effective nuclear charge decreases down a group, which also contributes to the increase in atomic radius.
What trend is oberserved among the atomic radii of main-group elements down a group. eplain this trend?
The trend of atomic radius increases down a group on the periodic table. This occurs because each successive element down a group has another energy level. As more electrons are added, more energy levels are needed to hold the electrons.
What trend is seen atom size going down the periodic table?
Excepting groups 5-12 of the periodic table.the atomic radius increase down in the group.
What trend in atomic radius occurs down a group in the periodic table?
Atomic radii increases moving down a group in the Periodic Table due to the increasing energy levels in the electron configuration and electrons filling in energy levels further away from the nucleus.
What is the trend in atomic size in the series of Group IIA elements Be through Ra?
The atomic size increases as you move down the Group IIA elements from Be to Ra. This trend is due to the increase in the number of electron shells as you move down the group, leading to greater atomic radius.
Is there a density trend on the periodic table?
Density increases down a group on the periodic table. The trend is more complex across a period. Metals are generally more dense than nonmetals, but among metals on a period, density increases to the right.
What is a periodic trend?
one should look for predictable changes and patterns
WHAT BEST STATES THE TREND IN ATOMIC RADIUS ACROSS THE PERIODIC TABLE?
As you move across the periodic table from left to right (across a period), the atomic radius of the elements tends to decrease.
What trend do you see in the relative electronegativity values of elements within a group?
In a group, electronegativity tends to decrease as you move down the periodic table. This is due to the increase in atomic size and shielding effect, which reduce the attraction of the nucleus for electrons in outer shells.
