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What happens to the size of atoms as the atomic number increases within a group?
Wiki User
∙ 13y ago
Going across a row in the peiodic table, the atoms have more protons and electrons causing a stronger attractive force, pulling the electrons closer to the nucleus, making the atomic radius decrease.
As a new shell is added ( next row down) the atomic radius increases
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoRespectfully, I disagree with the last answer. Yes, atomic size does increase as you move down the group but... and this is not obvious... it decreases as you move left to right across the period. True, at first glance you would not expect that. As you add protons as you move left to right within the given energy level, you also add electrons and the charges remain balanced. However, as each electron is added into the electron clouds surrounding the nucleus, they will have a distribution entirely surrounding the nucleus so that at any given moment, any one particular electron can be fully exposed to the positive nucleus. That last electron you put in will "see" several protons in the nucleus. So, the more protons you have, the smaller the atomic radius. As you go down the periodic chart (top to bottom), you increase by entire energy levels. Each level will be larger than the one above it.
Wiki User
∙ 14y agoI it increases. For example,
Hydrogen's atomic radii is 37
Lithium's atomic radii is 152
Sodium's atomic radii is 186 and so on
Wiki User
∙ 13y agoIt goes up and down in a rather complicated pattern. I'm sure you were looking for something simpler, but something simpler would have the disadvantage of being wrong.
Wiki User
∙ 13y agoIt decreases
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What is the atomic number of the element to the right of the periodic table?
The atomic number increases one-by-one stepping to the right (within a specific period) in the periodic table.
How does the physical state of a metal change as the atomic number increases?
sticking to increasing at no within group: more soft
Which of these describes atomic radii as one moves from top to bottom within a group?
The atomic radius increases from top to bottom within a group.
How does the atomic radius change from top to bottom in a group 1 and 2 in the periodic table?
Going down and to the left on the periodic table, atomic radius increases. Therefore, the smallest atomic radius is that of Helium (He), and the largest is that of Francium (Fr). Coincidentally, these are also the most and least reactive elements.
What trend can be observed among the atomic radii of main-group elements down a group?
Within a group, the number of shells (or energy level) increases (as we go from top to bottom of a group) and hence the size of the atom or the atomic radii increases.
What happens to ionization energy as atomic Number increases within a group?
and i thought answers could answer my question, this proofs that they're wrong
What is the process that results in the increase of atomic number?
The number of energy levels increase within a group. Therefor the atomic radius increases. So the atomic volume also increases.The atomic radius also increases in a group.For metals, reactivity increases down the group. For non-metals, reactivity decreases down a group.
Why does the atomic radius decrease with an increase in atomic numbers within a period?
As the atomic number increases, the number of protons in the nucleus increases or the effective nuclear charge of the nucleus increases. As a result the force exerted by the nucleus on the valence electrons is more or the size of the atom is small.
What happens to the atomic mass of the element moving from left to right within a period?
The Atomic Mass usually increases, but there are a few exceptions, such as tellurium to iodine.
What is the atomic number of the element to the right of the periodic table?
The atomic number increases one-by-one stepping to the right (within a specific period) in the periodic table.
How does the physical state of a metal change as the atomic number increases?
sticking to increasing at no within group: more soft
What are the two variables that affect atomic size within a group?
Increase in positive charge draws electrons closer to the nucleus. Increase in the number of occupied orbitals shields electrons in the highest occupied energy level from the attraction of proteins in the nucleus.
Which of these describes atomic radii as one moves from top to bottom within a group?
The atomic radius increases from top to bottom within a group.
As depth within earths interior increases what happens to density?
The density increases
What happens as gravity increases the pressure on the matter within a star?
The Rate of Fusion Increases
How does the atomic radius change from top to bottom in a group 1 and 2 in the periodic table?
Going down and to the left on the periodic table, atomic radius increases. Therefore, the smallest atomic radius is that of Helium (He), and the largest is that of Francium (Fr). Coincidentally, these are also the most and least reactive elements.
How does an atom get its atomic number?
An atom's atomic number is the number of protons within the single atom of an element
