What happens to the atomic radius as you move across a period from left to right?

Explanation: Atomic radius decreases as one moves across the periodic table from left to right, since effective nuclear charge increases and the electrons are held more tightly to the nucleus.

Why does atomic size increase as you go across a period?

Across a period, effective nuclear charge increases as electron shielding remains constant. A higher effective nuclear charge causes greater attractions to the electrons, pulling the electron cloud closer to the nucleus which results in a smaller atomic radius. This results in a larger atomic radius.

Does atomic size increase or decrease as you go from left to right across a period?

Atomic size gradually decreases from left to right across a period of elements. This is because, within a period or family of elements, all electrons are added to the same shell.

What happens to an atom if you change the number of protons it has?

Adding or removing protons from the nucleus changes the charge of the nucleus and changes that atom’s atomic number. So, adding or removing protons from the nucleus changes what element that atom is! For example, adding a proton to the nucleus of an atom of hydrogen creates an atom of helium.

How does the atomic radius change as you move down the group and move from left to right across the periodic table and why *?

On the periodic table, atomic radius generally decreases as you move from left to right across a period (due to increasing nuclear charge) and increases as you move down a group (due to the increasing number of electron shells). …

How does atomic radius change as you move from left to right across a period explain your answer in terms of the number of protons in the nucleus?

The atomic radius of atoms generally decreases from left to right across a period. Within a period, protons are added to the nucleus as electrons are being added to the same principal energy level. These electrons are gradually pulled closer to the nucleus because of its increased positive charge.

How does the atomic radius change as you go a from left to right in a period B down a group in the periodic table?

Atomic radius decreases while going from left to right in a period. This is because new electrons get added to the same shell while going from left to right in a period, which increases the attraction between electrons and protons, thus pulling electrons closer to protons and decreasing the atomic radius.

How does the atomic size vary as we go down a group and move left to right in a period give reason?

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

Why does atomic size decrease as we move from left to right along a period in the periodic table?

As we move from left to right across a period, the number of shells remain the same. As the atomic number increases, the nuclear charge increases and there is a greater attraction between the nucleus and the electrons. The atomic size, therefore, decreases across a period.

How does the mass of the atoms change as atomic number increases by one?

Therefore, an elements atomic number will never change. Atomic mass, however, can change and we call these isotopes. The atomic mass is the sum of the protons and neutrons in the nucleus, in an isotope you have more neutrons than you have protons making the mass larger than the stable nuclei.

How does the number of protons change as atomic number increase by one?

As you move to the right, the atomic number increases, meaning the number of protons increases. In addition, the number of electrons increases. However, because the mass of the proton is about 1836 times the mass of the electron, the strong nuclear force that attracts them is significant, shrinking the atomic radius.

How does atomic radius increase?

An atom gets larger as the number of electronic shells increase; therefore the radius of atoms increases as you go down a certain group in the periodic table of elements. In general, the size of an atom will decrease as you move from left to the right of a certain period.

How does atomic size change from left to right?

Atomic size decreases as we move from left to right in a period . As period number increases , number of shells increase , so atomic size increases .

How does the number of electrons in an atom change with time?

As we move from left to right in a period , number of electrons in shell increase , so effective nuclear charge ( force of attraction between nucleus of atom which has +ve charge and electrons which have -ve charge) increases so shells are closer to nucleus and atomic size is less .

What is the relationship between atomic size and period number?

Atomic size increases with increase in period number. (as we move from above to below in a group) Atomic size decreases as we move from left to right in a period.

Why does the radius of an atom vary from top to bottom?

Top to bottom: because as you go down the periodic table, the energy level increases, the electrons (which is negatively charged) orbits further away from the positive nucleus, which means the attraction between the two is weak making the radius bigger.