Name the metals that fills the gap in the reactivity series; K, Na, - Mg, -, Fe
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Answer:
A short introduction: When metals react with other substances like water, oxygen or acids, the metal atoms form positive ions (characteristic chemical behaviour of metals.
The chemical reactivity of a metal (e.g. how fast it reacts) is related to its tendency to form positive ions (cations). From quite simple experiments, metals can be arranged in order of their reactivity in what we call a reactivity series.
In order of decreasing reactivity, the metals potassium, sodium, lithium, calcium, magnesium, zinc, iron and copper can be put in order of their reactivity from their reactions with water and dilute acids.
The non-metals hydrogen and carbon are often included in the reactivity series, and this quite important when considering the method by which a metal can be extracted from its ore.
You should also note that a more reactive metal will displace a less reactive metal from one of its compounds.
reactivityFor a summary of the metals chemical reactions with air/oxygen, acids and oxides/salts (displacement), including word equations and balanced symbol equations, all in the context of the reactivity series, just click on its name from this alphabetical order list ... aluminium .. caesium .. calcium .. copper .. francium .. gold .. iron .. lead .. lithium .. magnesium .. platinum .. potassium .. rubidium .. silver .. sodium .. tin .. zinc (but the notes on this page are in order of decreasing position in the reactivity series of metals)
The reactivity series of metals is an important concept in chemistry and has implications for corrosion chemistry and its prevention, metal extraction, storage of reactive metals.
The higher the metal in the series, the more reactive it is and you usually observe a more vigorous - faster and more exothermic (heat releasing) reaction with oxygen, water or an acid.
At a more theoretical level, the more reactive a metal, the greater tendency it has to form a positive ion (cation) by losing electrons in the context of a chemical reaction
e.g. for sodium Na ==> Na+ or iron Fe ==> Fe2+
The more reactive a metal, the more easily it loses electrons to form a positive ion, an electron loss is a process called oxidation.
e.g. sodium loses its outer electron much more easily than iron loses two of its outer electrons, consequently, sodium is a much more reactive metal than iron.
Positive ions like Na+, Mg2+ or Al3+ are known as cations (they migrate to the negative cathode in electrolysis).
A largish atom like potassium is very reactive because the single outer electron is readily l
Answer:
ca-calcium, al-aluminium,zn- zinc