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The reactivity decreases down group 7.
Group 7 elements have 7 valence electrons (electrons on the very last electronic shell), so this means it need to attract one electron (because its harder to lose 7 than attract 1) to attain stable electronic configuration of 8 electrons.
Now because atomic radii decreases down a group, the nucleus is further away from the electrons, and the further away they are, the lower the force of attraction, making it harder to form a bond, meaning, they react less readily.
Volia! Reactivity decreases down group 7.
This is also the reason why reactivity increases down group 1
Because there is 1 valence electron, it needs to lose 1 electron to attain stable electronic configuration (because its harder to attract 7 than lose 1) and because the atomic radii decreases down a group (this rule is constant through the entire Periodic Table) the attraction is weaker, so its easier to lose 1 electron, making it easier for group 1 to bond, meaning, they react more readily.
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoReactivity in group 17 (or 7) halogens is decreasing going down: Fluorine is the most rective element of all on top!
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What tends to gain electrons?
Elements on the right of the periodic table but not in group 0/8 tend to gain electrons. Those in group 7 tend to gain 1 electron and those in group 6 tend to gain 2.
What is the net force of a 7 pound object falling 20 inches?
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What place on the periodic table does radium belong in?
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What cause the disperse in white light?
White light is made up of 7 colours. When put through a prism like a raindrop or a glass block, the 7 colours all travel at different speeds, because some slow down more than others. Thus, light is dispersed into it's spectrum
How does the reactivity of halogens change as you go down group 7?
dno
Describe the Reactivity of group 1 element varies with increasing atomic number?
describe how the reactivity of group1 elements and group 7 elements varies with increasing atomic number
Why do chemists use compounds instead of group 1 and 7 elements?
It is because the group 1 and 7 elements have a high reactivity. The reactivity is far too high to use on there own because the elements in these groups react with air and/or water.
What is the reactivity of group 7?
The reactivity of group 17 elements differ as you move down the periods. Group 17 elements are missing 1 electron from their valance shell making them highly votile and reactive.I'll try not to make this confusing:1. As elements get bigger, they have a higher level of reactivity. (More "pull" needed from protons in the nucleus in order to keep valance shell electrons in orbit).2. As you move from left to right in the groups, you have a higher level of reactivity.3. Groups 1 and 17 have the highest levels of reactivity (except hydrogen in group 1) because they are away by only 1 valence electron.
What element is most reactive in the group 7a?
flourine, reactivity goes down group 7Florine (F)
How does the reactivity change as you move down group 1 of the periodic table?
The ionozation energy (or ionization potential) is the key. This is the energy required to remove electrons from the neutral atom. More precisely: Ionization energy of an atom or molecule is the energy required to remove one mole of electrons from one mole of isolated gaseous atoms or ions. If you examine the ionization energies of the elements in a group you notice that it is lower as you go down the group (top to bottom) from Lithim to Caesium... This means less energy is rquired to remove electrons from Caesium than from Lithium and hence, Caesium will react more easily than Lithium under the same conditions. This is generally the opposite as you move left to right in the Periodic Table ; i.e. the ionization energies increase from left to right in general in each row. == It turns out that ionization energies, which are so well explained above, only measure reactivity. The reasonthat Group 1 elements (and Group 2, for that matter) become more reactive as you go down the column is because of electron screening that occurs to a greater extent in the elements with higher atomic numbers.
What happens to non metals across the periodic table?
Moving from left to right across a period, up to but not including the noble gases (group 18), reactivity increases. Moving down a group, the reactivity of the elements decreases. Fluorine is the most reactive element.
Why do the elements in group 7 become more less reactive as you go down the list?
Halogens have seven electrons on their outer shell. To fill the shell they only need one more. Towards the bottom of the table the atoms are physically bigger, and hence, have more trouble attracting electrons, since their nucleus' are further from the electron they want, and there are already electrons between them
Why group 16 want to bond with members of group 2?
Because group 1 does not have all of the electrons it needs so it steals electrons from group 17 so it can have the amount it needs because an atom needs 8 electrons in the outer layer.
What happens to the size of the atoms as you move down the periodic table in group 7?
Down the group, size increases. Because number of shells increases.
Why are Group 1 metals are called alkaline metals?
The Group 1 elements were given the name "alkali" (not alkaline) because they react with water to form hydroxide ions, creating a basic, or alkaline solution with a pH greater than 7. For example: 2Na(s) + 2H2O ---> 2NaOH(aq) + H2(g) As you move down the group, the reactivity increases. The reaction with water is exothermic and can ignite the hydrogen gas that forms in the reaction.
What is made when group 1 and 7 elements react together?
Did you mean group 7 or 17? Well if a group 1 and 7 element reacts it is called a Metal-Metal bond , which can be broken down into three subgroups: covalent, dative, and symmetry. If you ment Group 1 and 17 then it is an Ionic bond.
