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Trends in the Periodic Table — Reactivity!
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Why does reactivity increase across a period?
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In NON-METALS reactivity INCREASES as you go ACROSS a Period because the closer you get to fulling your s- and p- orbitals the more motivated you are to do so.
Why does the reactivity of METALS increase across a period?
It is because the number of valence shells is increasing, and the attraction between valence electrons and the nucleus decreases. Therefore, the tendency to pull electrons from other atoms decreases. On moving across a period, the electronegativity of atoms increases.
Why does reactivity decrease as period increases?
So, in a period first tendency to lose electron decreases to reactivity decreases and the tendency to gain electron increases so the reactivity increases.
How do periods relate to reactivity?
1 Answer. In Metals: Period – reactivity decreases as you go from left to right. Period – reactivity increases as you go from the left to the right.
What causes reactivity to increase?
The reactivity increases as you go down the group because: The outer electron is further away from the nucleus with each additional electron shell making the force of attraction weaker. This makes it easier for an atom to lose it’s outer electron.
What is the periodic trend for reactivity?
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Chemical reactivity of the elements
Period – reactivity decreases as you go from left to right across a period. The farther to the left and down the periodic chart you go, the easier it is for electrons to be given or taken away, resulting in higher reactivity.
What is the reactivity trend and why?
Reactivity Trends
Metal reactivity increases down a group because as nuclear shielding increases and the nucleus’ hold on the valence electron weakens, therefore it is easier to remove valence electrons.
What is periodic trends and chemical reactivity?
Periodic trends are said to be the patterns of the various properties of all the chemical elements. Many factors determine the trends of elements like electronegativity, atomic radii, and metallic character. Chemical reactivity refers to the energy that a chemical substance needs to undergo a reaction.
What is the trend of reactivity in group?
Metal reactivity decreases from left to right across periods and increases down groups. nonmetallic characteristics increases from left to right and decreases down groups. Nonmetal reactivity increases from left to right and decreases down groups.
What is the trend for reactivity of metals within a period?
The reactivity of metals increases further left along a period, and further down a group. On the other hand, reactivity in non-metals increase further right down a period, and further up a group. The most highly reactive element to be observed is cesium, as it spontaneously reacts with air and water!
Why does reactivity increase down a group?
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The reactivity of Group 1 elements increases as you go down the group because: the atoms get larger. the outer electron gets further from the nucleus. the attraction between the nucleus and outer electron gets weaker – so the electron is more easily lost.
What is the reactivity trend and why?
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Reactivity Trends
Metal reactivity increases down a group because as nuclear shielding increases and the nucleus’ hold on the valence electron weakens, therefore it is easier to remove valence electrons.
What is the trend in reactivity in group 1 and why?
The reactivity of group 1 elements increases as you go down the group because: the atoms become larger. the outer electron becomes further from the nucleus. the force of attraction between the nucleus and the outer electron decreases.
What is the trend for reactivity of metals?
Metal reactivity decreases from left to right across periods and increases down groups. nonmetallic characteristics increases from left to right and decreases down groups.
Why does reactivity decrease from left to right?
It is because the number of valence shells is increasing, and the attraction between valence electrons and the nucleus decreases. Therefore, the tendency to pull electrons from other atoms decreases. On moving across a period, the electronegativity of atoms increases.
Why does reactivity of metals increase from right to left?
Why does the reactivity of metals increase from right to left on the periodic table? Metals on the right have fewer protons, making it harder to attract electrons from other atoms. Metals on the right have fewer valence energy levels, so electrons are closer to the nucleus and harder to pull away.
References:
Trends in reactivity in the periodic table | Resource
A Simple Guide to the Trends of Chemical Reactivity in Periodic …
Explaining the Periodic Trends in Reactivity – Study.com
What is the trend in reactivity across a period in the periodic table …
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