What is the trend in Group 1 reactivity?
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.
What is the physical properties of Group 1?
General physical properties of Group 1 elements: Alkali metals are grey solids with shiny silvery surfaces when freshly cut. These surfaces turn dull when exposed to air. This is because alkali metals are very reactive. They react rapidly with oxygen and water vapour in the air when exposed.
What makes Group 1 so reactive?
Alkali metals are among the most reactive metals. This is due in part to their larger atomic radii and low ionization energies. They tend to donate their electrons in reactions and have an oxidation state of +1. All these characteristics can be attributed to these elements’ large atomic radii and weak metallic bonding.
What is the trend of reactivity in group I and II?
Reactivity. Reactivity of Group II elements increases down the group. Group II elements are less reactive than the corresponding Group I element in the same period, since two rather than one electron need to be lost in order to gain noble gas configuration.
What is the trend in group 1 elements?
Explaining the trend 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 are group 1a elements very reactive?
The First Group Elements in the same group of the periodic table have the same number of valence electrons. These are the electrons in their outer energy level that can be involved in chemical reactions. All the elements in group 1 have just one valence electron. This makes them very reactive.
Why are group 1 elements the most reactive?
Elements in the same group of the periodic table have the same number of valence electrons. These are the electrons in their outer energy level that can be involved in chemical reactions. All the elements in group 1 have just one valence electron. This makes them very reactive.
What are the characteristics of group 1 elements?
Group one elements share common characteristics. They are all soft, silver metals. Due to their low ionization energy, these metals have low melting points and are highly reactive. The reactivity of this family increases as you move down the table.
What makes group 1 elements the most reactive metals?
Because they have just one valence electron, group 1 elements are very reactive. As a result, they are found in nature only in combination with other elements. Alkali metals are all solids at room temperature.
Why are the Group 1 metals so reactive What are these metals called?
How does reactivity change from an element in Group 1 to an element in the same period in group 2?
The nuclear charge increases when going from group 1 to group 2. The higher ionization energy makes the alkaline earth metals less reactive than the alkali metals; however, they are still very reactive elements. Their reactivity increases, as expected, with increasing size and decreasing ionization energy.
What are reactivity trends?
Chemical reactivity of the elements Period – reactivity decreases as you go from left to right across a period. Group – reactivity increases as you go down a group. 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 trend in reactivity in Group 1?
What is the trend in reactivity 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.
How does the reactivity of Group 1 metals change?
All group 1 metals have one electron in its outer shell. As we go down the group, the atom gets bigger. 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. Similarly, what is the trend in the reactivity of the alkali metals?
What happens to physical properties of Group 1 elements?
Trend of change in the physical properties The physical properties of the elements vary gradually when going down Group 1 as shown in Table. The atomic radius (atomic size) of alkali metals increases gradually down the group. The number of shells occupied with electrons increases down the group.
Where is Group 1 on the periodic table?
Group 1 – physical properties Group 1 contains elements placed in a vertical column on the far left of the periodic table. The elements in group 1 are called the alkali metals. Group 1 is on the left-hand side of the periodic table