The reactivity of Group 1 elements increases as you go down the group because:
- the atoms get larger as you go down the group
- the outer electron gets further from the nucleus as you go down the group
- the attraction between the nucleus and outer electron gets weaker as you go down the group - so the electron is more easily lost
Why does reactivity increase as you go down Group 1?
Why does reactivity increase as you go down Group 1 metals? An atom is made in such a way that the nucleus with the positive charges (protons) is in the centre and the negative charge (electrons) are arranged in shells around it. All group 1 metals have one electron in its outer shell.
Why are Group 1 metals so reactive?
Group 1 metals all have one electron in their outer shell. When they react they form positive metal ions by losing this electron. Since there is only one electron to lose, group 1 metals are all extrememely reactive. The reactivity of group 1 metals increases as you go down the group because: 1) The atomic radius increases.
Why do Group 7 elements get more reactive as you go up?
This is because the increased number of electron shells results in more shielding and a greater distance between the outer electrons and the nucleus, which reduces the attraction of the electrons to the nucleus. Also, why do Group 7 elements get more reactive as you go up? The reactivity of Group 7 elements decreases down the group.
Why is the reactivity of an atom increased when it changes?
This makes it easier for the atom to give up the electron which increases its reactivity.
Why does the reactivity increase in group 1?
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.
Why does reactivity increase down group 1 but decrease down Group 7?
Reactivity decreases down the group. This is because group 7 elements react by gaining an electron. As you move down the group, the amount of electron shielding increases, meaning that the electron is less attracted to the nucleus.
Why is group 1 the most reactive on the periodic table?
Group 1 of the periodic table includes hydrogen and the alkali metals. Because they have just one valence electron, group 1 elements are very reactive.
Why does reactivity increase down group 1 but decrease down group 17?
Because the halogen elements have seven valence electrons, they only require one additional electron to form a full octet. This characteristic makes them more reactive than other non-metal groups.
Why does the reactivity increase in group 2?
Reactions of Group 2 metals with water and oxygen As you progress down Group 2, the reactivity increases. This is due to a decrease in ionisation energy as you progress down the group. As it requires less energy to form the ions, the reactivity increases.
What makes an element more reactive?
The number of electrons in the outermost shell of an atom determines its reactivity. Noble gases have low reactivity because they have full electron shells. Halogens are highly reactive because they readily gain an electron to fill their outermost shell.
Why reactivity of metals increase down group?
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.
Does reactivity increase across a period?
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 are the elements in the group 1?
The Group 1 elements in the periodic table are known as the alkali metals. They include lithium, sodium and potassium, which all react vigorously with water to produce an alkaline solution.
What is an example of a trend in a reaction?
Explaining trends. In a reaction, an atom of a Group 1 element will form an ion with a single positive charge. For example, for sodium forming a sodium ion: A change like this, where an electron is lost, is an example of oxidation. The ions formed have a stable electronic structure, like a noble gas from Group 0.
Why do ions form when you go down the group?
The ions formed have a stable electronic structure, like a noble gas from Group 0. The reactivity of Group 1 elements increase s as you go down the group because: the atoms get larger as you go down the group. the outer electron gets further from the nucleus as you go down the group.
Which electron gets further from the nucleus as you go down the group?
the outer electron gets further from the nucleus as you go down the group. the attraction between the nucleus and outer electron gets weaker as you go down the group - so the electron is more easily lost. previous. 1. 2.
What happens to the atom as you go down the group?
As we go down the group, the atom gets bigger. The bigger the atom, the further away the last electron. Therefore, the attraction between the nucleus and the last electron gets weaker. This makes it easier for the atom to give up the electron which increases its reactivity. Answered by Madhangi P. • Chemistry tutor.
How are atoms made?
An atom is made in such a way that the nucleus with the positive charges (protons) is in the centre and the negative charge (electrons) are arranged in shells around it. All group 1 metals have one electron in its outer shell. As we go down the group, the atom gets bigger. The bigger the atom, the further away the last electron.
