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Subjects
Science CBSE
Class 10
Metals and non-metals
Textbook questions

52. NCERT Exemplar: Short answer questions XIII

Exercise condition:

4 m.

Give the formulae of the stable binary compounds that would be formed by the combination of following pairs of elements:

a. \(Mg\) and \(N_2\)

b. \(Li\) and \(O_2\)
c. \(Al\) and \(Cl_2\)

d. \(K\) and \(O_2\)

a. \(Mg\) and \(N_2\):

\(2Mg + N_2 →Mg_2N_2\)
\(2Mg + N_2 →2MgN\)
\(3Mg + N_2 →Mg_3N_2\)

b. \(Li\) and \(O_2\):

\(4Li + O_2→ 2Li_2O_2\)
\(4Li + O_2→ 2Li_2O\)
\(2Li + O_2→ 2LiO\)

c. \(Al\) and \(Cl_2\)

\(2Al + 3Cl_2→ 2AlCl_3\)
\(2Al + 3Cl_2→ Al_2Cl_3\)
\(2Al + 3Cl→ 2AlCl_3\)

d. \(K\) and \(O_2\)

\(3K + O_2 → 3K_2O\)
\(4K + O_2 → 2K_2O\)
\(2K + O_2 → K_2O_2\)

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