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What happens to the number of electrons as the atomic number increases on the period table?
The electrons increase, too.
The atomic number is the number of protons, which gives the positive charge ( a more useful number than the atomic weight ), to balance the positive charge, a roughly equal number of electrons are needed. There are minor differences in some molecular combinations, and some temporary imbalances, but generally the charges balance out.
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What happens to the number of electrons in an atom when the atomic number increases?
When the atomic number increases, the number of protons in the nucleus also increases. Since atoms are electrically neutral, the number of electrons in the atom would also increase to match the number of protons, maintaining a balanced charge.
When the atomic number increases what happens to the atomic radius?
When an electron absorbs a photon and therefore has more energy, it will move to a higher orbital and the radius of the atom will increase. This is generally a temporary state of affairs, since the electron will eventually re-emit the photon and fall back to its ground state.
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.
As you travel down a group the do atomic size increases or decreases?
As you travel down a group on the periodic table, the atomic size increases. This is because each successive element in a group adds a new energy level, or shell, which increases the distance between the nucleus and the outermost electrons, thus increasing the atomic size.
How many electrons does the isotope sulfur-36 have?
Atomic number of sulfur = Number of protons = Number of electrons = 16
What happens to the number of electrons in an atom when the atomic number increases?
When the atomic number increases, the number of protons in the nucleus also increases. Since atoms are electrically neutral, the number of electrons in the atom would also increase to match the number of protons, maintaining a balanced charge.
What does the number of electrons in an atom do as the atomic number increases?
Increase
What happens to the atomic radius as the atomic number increases?
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
What happens to the atomic number as you move across a period?
.The atomic mass increases
What happens to the electron configuration as the atomic number increases?
the elctron configuration increases
What happens to the atomic number as you go across a period?
The atomic number increases as one go across a period.
As you move down a group or family on the periodic table which of the following isnt true?
As you move down a group or family on the periodic table: The number of energy levels increases (true). The atomic radius increases (true). The number of valence electrons remains the same (not true - the number of valence electrons increases as you move 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.
When looking across a period of the periodic table from left to right when happens to the atomic number and electronegativity?
As you move across a period from left to right in the periodic table, the atomic number of the elements increases by one with each element. Electronegativity also increases across a period from left to right due to the increasing nuclear charge and decreasing atomic radius, which results in stronger pull on electrons.
Why does the electronegativity increase as the atomic number increases?
The number of electrons increases with the atomic number. So the electronegativity increases with the atomic number. Not quite. Electronegativity doesn't consistently increase with atomic number. For example, F is more electronegative than Na, even though Na has a higher atomic number.
What happens to the atomic radii of the elements as a group is descended?
As we descend down the group, the atomic radii increases. This is because the number of shells increases.
What happens to electrons when you move from left to right across a period?
As you move from left to right across a period, the number of protons increases, leading to a stronger positive charge in the nucleus. This attracts the electrons more strongly, resulting in a greater effective nuclear charge experienced by the electrons. This increased attraction causes electrons to be pulled closer to the nucleus, leading to a decrease in atomic size.
