Chapter U5.15, Problem 1TAI

Interpretation Introduction

Interpretation:The reaction of metal with oxygen needs to be explained.

Concept Introduction:The elements in the periodic table can be classified as metals, non-metal and metalloids.

Metals are mainly placed at the left side of the periodic table and are quite reactive elements. Non-metals are placed at the right side of the periodic table and are mainly electronegative elements.

Answer to Problem 1TAI

The reaction of metal with oxygen leads to the formation of metal oxide.

Explanation of Solution

Metals are very reactive elements which are usually exist in solid state. They have luster surface and are very god conductor of heat and electricity. This is because, they have 1,2 or 3 valence electrons and tend to give valence electrons to form metal cation.

Metal reacts with oxygen to form metal oxide. For example, the reaction of sodium with oxygen forms sodium oxide as given:

  ${\text{2Na}}_{\text{(s) }}{\text{+ O}}_{\text{2(g)}}\stackrel{}{\to }{\text{Na}}_{\text{2}}{\text{O}}_{\text{(s)}}$

Conclusion

Thus, the reaction is as follows:

  ${\text{2Na}}_{\text{(s) }}{\text{+ O}}_{\text{2(g)}}\stackrel{}{\to }{\text{Na}}_{\text{2}}{\text{O}}_{\text{(s)}}$

Here, Na is a metal which reacts with oxygen to form sodium oxide.