Hereof, Which alkaline earth metal is most reactive?

Alkaline Earth Metals. The alkaline earth metals are the second most reactive family of elements. Beryllium, magnesium, calcium, strontium, barium and radium are all shiny, and silvery-white.

Which element is more reactive? Fluorine is identified as the most electronegative element in the periodic table, making it the strongest oxidizing agent. It is the most reactive non-metal. Fluorine is so reactive that it can burn substances that one would generally think of as non-flammable!

32 Related Questions Answers Found


Is Group 1 or Group 7 more reactive?

As you go down group 1 (the alkali metals) in the periodic table, the elements get more reactive. As you go up group 7 (the halogens), again the elements get more reactive.

Why are halogens so reactive?

Halogens are highly reactive, and they can be harmful or lethal to biological organisms in sufficient quantities. This reactivity is due to high electronegativity and high effective nuclear charge. Halogens can gain an electron by reacting with atoms of other elements. Fluorine is one of the most reactive elements.

Which element is least reactive in Group 2?

Group 2 Elements: The Alkaline Earth Metals. The Group 2 alkaline earth metals include Beryllium, Magnesium, Calcium, Barium, Strontium and Radium and are soft, silver metals that are less metallic in character than the Group 1 Alkali Metals.

Why does reactivity decrease GCSE 7?

Reactivity of the elements in group 7 decreases down the group. This is because the electrons in the outer shell are further away from the nucleus.

What is the most reactive chemical family?

The halogens, alkali metals, and alkaline earth metals are highly reactive.
  • The most reactive element is fluorine, the first element in the halogen group.
  • The most reactive metal is francium, the last alkali metal (and most expensive element).
  • The least reactive elements are the noble gases.

What makes halogens reactive?

Halogens are reactive because they want to obtain that last electron to fill their outer level. Fluorine is the smallest atom of the halogen elements. It also has the strongest ability to attract electrons from other elements, making it the most reactive of the halogens.

Are alkaline earth metals reactive?

They are silvery or gray in color. They are also relatively soft and low in density. Alkaline Earth metals are very reactive because they readily give up their two valence electrons to achieve a full outer energy level, which is the most stable arrangement of electrons.

Is Group 1 or Group 2 more reactive?

Which element is least reactive in Group 6?

Chemical Properties of Noble Gases

Noble gases are the least reactive of all known elements. That’s because with eight valence electrons, their outer energy levels are full. The only exception is helium, which has just two electrons.

What is Group 7 on the periodic table called?

The Group 7 elements are called the halogens. They are placed in the vertical column, second from the right, in the periodic table . Chlorine, bromine and iodine are the three common Group 7 elements. Group 7 elements form salts when they react with metals. The term ‘halogen’ means ‘salt former’.

Why is Group 1 most reactive?

The most reactive element in group 1 is casesium because as we come from top to bottom, the size of atom is increased in the parallel with the number of electron, so the strength to held the electron decrease, and we know that all alkali metal have one electron in outer most shell so it can be very easy to remove that

Why are elements more reactive down a group?

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.

Which elements are most reactive and why?

Caesium and fluorine. Group I metals are the most reactive metals as they only have one electron in their outer shell which is easy to lose; they get more reactive as you go down the periodic table as the electron is further from the nucleus and shielded by the inner electrons.

What does it mean to be diatomic?

Diatomic molecules are molecules composed of only two atoms, of the same or different chemical elements. The prefix di- is of Greek origin, meaning “two”. If a diatomic molecule consists of two atoms of the same element, such as hydrogen (H2) or oxygen (O2), then it is said to be homonuclear.

What is the most reactive group 1 element?

Reaction with Water

Thus, iodine and bromine do not react with water. However, fluorine and chlorine have larger reduction potentials, and can oxidize water. The reaction of water with chlorine, shown below, proceeds very slowly.

What is the most reactive group 1 element?

Both the melting and boiling points decrease down the group. The decrease in melting and boiling points reflects the decrease in the strength of each metallic bond. The atoms in a metal are held together by the attraction of the nuclei to electrons which are delocalized over the whole metal mass.

Which group is very unreactive?

noble gases

Why is fluorine most reactive?

Fluorine wants to get to a stable 10 electrons to be like Neon. This is because the valence/bonding electrons are closer to the nucleus in Fluorine than they are Chlorine and others and thus more strongly attracted. Fluorine is most electronegative, thus it is most reactive.

What is the pattern going down Group 7?

The table shows the colour and physical states of chlorine, bromine and iodine at room temperature and pressure. The melting points and boiling points of the halogens increase going down group 7, and their colour gets darker. The group 7 elements exist as diatomic molecules . Astatine is placed below iodine in group 7.

How many groups are in the periodic table?


What is the order of reactivity of halogens?


Which element is least reactive in Group 2?

The reactivity of alkali metals increases from the top to the bottom of the group, so lithium (Li) is the least reactive alkali metal and francium (Fr) is the most reactive. Because alkali metals are so reactive, they are found in nature only in combination with other elements.

Which is more reactive halogens or alkali metals?

Alkali metals and halogens react in different ways, and there is no standard for comparison. Halogens will react with most metals much more vigorously than alkali metals will, but alkali metals will react more vigorusly with non-metals than halogens will.

Which is more reactive halogens or alkali metals?


What are the properties of metals?

Metal Physical Properties:
  • Lustrous (shiny)
  • Good conductors of heat and electricity.
  • High melting point.
  • High density (heavy for their size)
  • Malleable (can be hammered)
  • Ductile (can be drawn into wires)
  • Usually solid at room temperature (an exception is mercury)
  • Opaque as a thin sheet (can’t see through metals)

Which element is least reactive in Group 7?

The non-metal elements in Group 7 – known as the halogens – get less reactive as you go down the group. This is the opposite trend to that seen in the alkali metals in Group 1 of the periodic table . Fluorine is the most reactive element of all in Group 7.

Why does reactivity increase?

These react by losing electrons and reactivity increases as you go down the group. 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.

Why do the melting points of halogens increase?

The melting and boiling points increase down the group because of the van der Waals forces. The size of the molecules increases down the group. This increase in size means an increase in the strength of the van der Waals forces.

Which Halogen is most reactive?

The non-metal elements in Group 7 – known as the halogens – get less reactive as you go down the group. This is the opposite trend to that seen in the alkali metals in Group 1 of the periodic table . Fluorine is the most reactive element of all in Group 7.

Why does Bond enthalpy decrease down Group 7?

The attraction gets less as you go down the group, and so the bond enthalpies fall. The halogen atoms are getting bigger, and so the bonding electrons are further from the halogen nucleus, and experience less attraction towards it. The bond is therefore more easily broken.

Why did Mendeleev leave gaps in the periodic table?