Which of 6 metals should be most reactive to oxygen?

In summary, the reactivity of a metal to oxygen is determined by its electronegativity and the energy required for its outermost electrons to be removed. Metals with lower electronegativity and ionization energy are more reactive to oxygen. Among the 6 metals, cesium has the lowest electronegativity and is highly reactive to oxygen. The size of the metal atom also plays a role in its reactivity, with larger atoms being more easily reactive. Some metals, like gold and platinum, have low reactivity to oxygen. The reactivity of a metal to oxygen can be predicted by its position on the periodic table, with elements in Group 1 and 2 being more reactive than those in the middle or right side.
  • #1
ally922
2
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Of the following 6 metals (Ca, Mg, Zn, Fe, Sn, Cu), which should be the most reactive toward oxygen? I don't understand how you determine this...what should I be looking at and/or calculating?
 
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  • #2
Look for reactivity series.
 
  • #3


I would approach this question by considering the reactivity series of metals. The reactivity series is a list of metals ranked according to their reactivity with other elements, with the most reactive metal at the top and the least reactive metal at the bottom.

In this case, the most reactive metal towards oxygen would be at the top of the reactivity series. The reactivity of a metal towards oxygen is determined by its ability to lose electrons and form positive ions in the presence of oxygen. This process is known as oxidation.

Based on the reactivity series, the most reactive metal towards oxygen is potassium (K), followed by sodium (Na), calcium (Ca), magnesium (Mg), aluminum (Al), zinc (Zn), iron (Fe), tin (Sn), lead (Pb), copper (Cu), silver (Ag), and gold (Au). Therefore, in the given list of metals (Ca, Mg, Zn, Fe, Sn, Cu), calcium (Ca) should be the most reactive towards oxygen.

Additionally, the reactivity of metals towards oxygen can also be determined by their electronegativity values. Metals with lower electronegativity values tend to be more reactive towards oxygen as they have a greater tendency to lose electrons and form positive ions. In the given list of metals, calcium (Ca) has the lowest electronegativity value (1.00) compared to the other metals, indicating its higher reactivity towards oxygen.

In conclusion, based on the reactivity series and electronegativity values, calcium (Ca) should be the most reactive metal towards oxygen out of the given list of metals.
 

1. What factors determine the reactivity of a metal to oxygen?

The reactivity of a metal to oxygen is primarily determined by its electronegativity and the energy required for its outermost electrons to be removed. Generally, metals with lower electronegativity and lower ionization energy (easier to lose electrons) will be more reactive to oxygen.

2. Which of the 6 metals has the lowest electronegativity?

Cesium, with an electronegativity of 0.79, has the lowest electronegativity among the 6 metals (lithium, sodium, potassium, rubidium, cesium, and francium) and is known to be highly reactive to oxygen.

3. Does the size of the metal atom affect its reactivity to oxygen?

Yes, the size of the metal atom can also play a role in its reactivity to oxygen. Generally, larger atoms have a weaker hold on their outermost electrons, making them more easily reactive to oxygen.

4. Are all metals reactive to oxygen?

No, not all metals are reactive to oxygen. Some metals, such as gold and platinum, have very low reactivity to oxygen and are considered to be "noble" metals.

5. How can we predict which metal will be most reactive to oxygen?

We can predict the reactivity of a metal to oxygen by looking at its position on the periodic table. Metals in the first column (Group 1) and second column (Group 2) are generally more reactive to oxygen than those in the middle or right side of the table. Additionally, the position of the metal in its respective group can also give an indication of its reactivity, with elements at the top being more reactive than those at the bottom.

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