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What happens to the reactivity of left to right across the periodic table?
Across a period, as we move from left to right, the electronegativity increases in the periodic table.
Ionization energies tend to do what from left to right across a period?
increase from left to right across a period.
Why does atomic size increase from left to right across a period?
atomic size decreases across a period
What happens to the first ionization energy of the elements as a period is crossed?
Moving from left to right across a period, the first ionization energy increases because it becomes increasingly difficult to remove an electron.
What do you notice about the number of valence electrons as you move from left to right across a row or period?
The number of valence electrons increases from left to right across a period.
What happens to the reactivity of left to right across the periodic table?
Across a period, as we move from left to right, the electronegativity increases in the periodic table.
What happens to the atomic mass as you go across a period from left to right?
It generally goes up, though there are exceptions.
Ionization energies tend to do what from left to right across a period?
increase from left to right across a period.
What happens to the state of matters you go across the periodic table?
Across the period (left to right), the elements tend to change from solids (metals) to gases (non metals).
As you move across a period of the periodic table from left to right what happens to the number of protons contained by each element?
The number of protons contained by each element increases by one as you move across a period of the periodic table from left to right. This is because each element in a period has one more proton in its nucleus than the element before it.
What happens to electronegativity as you go across a period?
Electronegativity increases as you go across a period from left to right due to a stronger pull on electrons by the increasing positive charge of the nucleus. This results in atoms becoming more effective at attracting electrons.
Why does atomic size increase from left to right across a period?
atomic size decreases across a period
What happens to the first ionization energy of the elements as a period is crossed?
Moving from left to right across a period, the first ionization energy increases because it becomes increasingly difficult to remove an electron.
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.
What do you notice about the number of valence electrons as you move from left to right across a row or period?
The number of valence electrons increases from left to right across a period.
What happens to the atomic radius as you go across a period?
It decreases as you move from left to right because there is an increase in positive charge in the nucleus as you go from left-to-right. Each time you go over an element it has one more electron and proton added to the principal energy level, so the nucleus pull increases and it holds the valence electron in tighter.
What is the trend in period 2 ionization energy across the elements?
The trend in period 2 ionization energy across the elements increases from left to right.
