Predict the formula of the stable binary compounds that would be formed by the combination of the following pairs of elements.
(a) Lithium and oxygen
(b) Magnesium and nitrogen
(c) Aluminium and iodine
(d) Silicon and oxygen
(e) Phosphorus and fluorine
(f) Element 71 and fluorine

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Solution

(a) $L i O_{2}$
(b) $M g_{3} N_{2}$
(c) $A l I_{3}$
(d) $S i O_{2}$
(e) $P F_{3}$ or $P F_{5}$
(f) The element with the atomic number 71 is Lutetium (Lu). It has valency 3. Hence, the formula of the compound is $L u F_{3}$ .

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Chemical Reactivity (Group 1)

Standard XII Chemistry

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Predict the formula of the stable binary compounds that would be formed by the combination of the following pairs of elements. (a) Lithium and oxygen (b) Magnesium and nitrogen (c) Aluminium and iodine (d) Silicon and oxygen (e) Phosphorus and fluorine (f) Element 71 and fluorine

(a) LiO2 (b) Mg3N2 (c) AlI3 (d) SiO2 (e) PF3 or PF5 (f) The element with the atomic number 71 is Lutetium (Lu). It has valency 3. Hence, the formula of the compound is LuF3.

Predict the formula of the stable binary compounds that would be formed by the combination of the following pairs of elements.
(a) Lithium and oxygen
(b) Magnesium and nitrogen
(c) Aluminium and iodine
(d) Silicon and oxygen
(e) Phosphorus and fluorine
(f) Element 71 and fluorine

(a) $L i O_{2}$
(b) $M g_{3} N_{2}$
(c) $A l I_{3}$
(d) $S i O_{2}$
(e) $P F_{3}$ or $P F_{5}$
(f) The element with the atomic number 71 is Lutetium (Lu). It has valency 3. Hence, the formula of the compound is $L u F_{3}$ .