0
What happens to the size of the atoms as you move across a period on the periodic table?
Wiki User
∙ 9y ago
When an atom moves across a period, the size (atomic radius) decreases because there are more protons and electrons, which create greater attraction and thus shrinks the size. When dealing with transition metals, the atomic radius decreases and then increases across a period. This is because there is an initial increased attraction between the protons and electrons and then a repulsion of electrons when more electrons are added to the same electron shell.
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoAtomic size decreases across periods going from left to right because the addition of protons to the nucleus contracts the electrons around the atom. Size typically increases going down a group due to an increasing number of electron shells, where the inner shells reduce the attractive forces of the nucleus and repel the electrons in the outer shell. From this we can deduce that helium (He) has the smallest size and francium (Fr) the largest.
Wiki User
∙ 16y agoas you go along, in the 1st colum there is 1- charge in the 2nd .... 2- in the 3rd....3- in the 4th no charge at all in the 5th....3+ in the 6th.....2+ in the 7th....1+ in the 8th...there are none, they are all gases. hope this helps!!!
Wiki User
∙ 12y agoIt increases. Read the atomic numbers; they go up by one, with each space you move to the right, meaning there is one more proton in the nucleus.
Wiki User
∙ 11y agoAtomic radii increases down a group as the number of shells (or energy level) increases. Atomic radii will decrease across a period as the effective nuclear charge increases.
Wiki User
∙ 6y agoThe atoms get bigger as you go down the group.
Wiki User
∙ 13y agoAtomic radii decrease in going left to right across a period. See the related question below for an explanation.
Wiki User
∙ 9y agoAs we move across a period, the size of the atom decreases as more elements enter into same shell which increases the effective nuclear interaction.
Add your answer:
Earn +20 pts
What is a row of elements across the periodic table called?
The rows going across the periodic table are called periods. As you go across a row, each element increases in number of protons and electrons, which distinguishes it from other elements in the table.
What happens to the atomic size of the atoms as you go from left to right of the periodic table?
The atomic radius decrease from left to right in the periodic table.
What trend electronegativity do you see across period on the periodic table?
The trend as you move from left to right across a period in the periodic table, the electronegativity increases due to the stronger attraction that the atoms obtain as the nuclear charge increases. Moving down a group, the electronegativity decreases due to the longer distance between the nucleus and the valence electron shell, thereby decreasing the attraction, making the atom have less of an attraction for electrons or protons.
Why do numbers of electrons change across a period of elements?
Why not?If two atoms have the same number of protons, they're the same element. Therefore, unless they're electrically charged, they must have the same number of electrons as well. So the number of electrons in two different elements must be different if the atoms are electrically neutral.
What is the general trend of ionization energy as you go across the periodic table?
Across a period, first ionization energy increases. However, when going down a group, first ionization energy generally decreases. As you go down a group, atoms hove more total electrons so they don't really care that much about their outermost ones.
Why don't atoms simply get larger you read across the periodic table?
because the no. of shells in the atoms across the Periodic Table remains the same
Why don't atoms simply get larger as you read across the periodic table?
because the no. of shells in the atoms across the periodic table remains the same
What is a row of elements across the periodic table called?
The rows going across the periodic table are called periods. As you go across a row, each element increases in number of protons and electrons, which distinguishes it from other elements in the table.
How the period in the periodic table?
The no of period of Periodic Table tells the no of shells in atoms, so their atomic sizes and other physical properties may be imagined.
Is it true Moving across a row of the periodic table the atoms tend to get bigger?
yes
Nuclear charge increases across a period atoms become?
The atoms become smaller in atomic radius.
Why do the properties of elements change across the period?
They change because the atomic number and mass differ from each other element. Going across the Periodic Table to the right, the atoms get smaller because another proton is added each time so the effective nuclear charge experienced by the electrons is greater and the electrons are pulled closer to the nucleus. Electronegativity increases as you progress across a period because smaller atoms are usually more likely to gain an electron. Ionization energy increases across a period because the atoms are smaller, pulled closer to the nucleus, so it takes more energy to break an electron away.
What happens to the atomic size of the atoms as you go from left to right of the periodic table?
The atomic radius decrease from left to right in the periodic table.
Why as you grow across the periodic table atoms go smaller and grows bigger down the chart?
Because they do just get over it!
Which atom is the smallest among lithium and fluorine?
Fluorine because it has a smaller atomic radius.
How is the number of energy levels in an atom related to the periodic number?
The period number is the same as the highest energy level containing electrons for the atoms in that period.
What trend electronegativity do you see across period on the periodic table?
The trend as you move from left to right across a period in the periodic table, the electronegativity increases due to the stronger attraction that the atoms obtain as the nuclear charge increases. Moving down a group, the electronegativity decreases due to the longer distance between the nucleus and the valence electron shell, thereby decreasing the attraction, making the atom have less of an attraction for electrons or protons.
