Predict the formulas of the stable binary compounds that would be… - Vidyadip

Question

Predict the formulas 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

✓

Answer

(a) $Li _2 O$ [Valency of $Li =1$ (First group), valency of oxygen $=2\left(16^{\text {th }}\right.$ group $\left.)\right]$
(b) $Mg _3 N_2$ [Valency of $Mg =2$ (second group), valency of nitrogen $=3\left(15^{\text {th }}\right.$ group $\left.)\right]$
(c) $AlI _3$ [Valency of $Al =3$ (third group), valency of $I=1\left(17^{\text {th }}\right.$ group $\left.)\right]$
(d) $SiO _2$ [Valency of $Si =4$ (fourteen group), valency of oxygen $=2\left(16^{\text {th }}\right.$ group $\left.)\right]$
(e) $PF _3$ or $PF _5$ [Valency of $P =3,5\left(15^{\text {th }}\right.$ group $)$, valency of $F=1$ ( $17^{\text {th }}$ group) ]
(f) $71^{\text {th }}$ element $= Lu , LuF _3$ [Valency of $Lu =3$ valency of $F=1$ ( $17^{\text {th }}$ group)]

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "3 Marks Question" from PART - 1 CH - 3 Classification of Elements and Periodicity in Properties→PART - 1 CH - 3 Classification of Elements and Periodicity in Properties — all question types→Chemistry STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

Energy of an electron in the ground state of the hydrogen atom is –2.18×10–18J. Calculate the ionization enthalpy of atomic hydrogen in terms of J mol–1.
Hint: Apply the idea of mole concept to derive the answer.

Account for the following:

What is the state of hybridisation of stared carbon atoms in,

$\text{CH}_3-\text{}*\text{CH}=\text{CH}_2?$

Write the molecular orbital electronic configuration of $\text{O}^-_2.$ Calculate its bond order and predict its magnetic behaviour.

Write the Lewis dot structure of the CO molecule.

100mL of a liquid is contained in awn insulated container at a pressure of 1bar. The pressure is steeply increased to 100bar. The volume of the liquid is decreased by 1mL at this constant pressure. Find $\Delta\text{H}$ and $\Delta\text{U}.$

Chlorine is prepared in the laboratory by treating manganese dioxide (MnO₂) with aqueous hydrochloric acid according to the reaction
4HCl_(aq) + MnO_2(s) → 2H₂O_(l) + MnCl_2(aq) + Cl_2(g)
How many grams of HCl react with 5.0g of manganese dioxide?

7-bromo-1, 3, 5-cycloheptatriene exists as an ion whereas 5-bromo-1, 3-cyclopentadiene does not form an ion even in presence of Ag⁺. Explain.

Which of the following reactions involve homogeneous equilibrium and which involve heterogeneous equilibrium?

$\text{Ag}_2\text{O}(\text{s})+2\text{HNO}_3(\text{aq})\rightleftharpoons2\text{AgNO}_3(\text{aq})+\text{H}_2\text{O}(\text{l})$
$\text{C(s)}+\text{CO(}_2(\text{g})\rightleftharpoons2\text{CO(g)}$
$\text{CH}_3\text{COOC}_2\text{H}_5(\text{aq})+\text{H}_2\text{O}(\text{l})\\\rightleftharpoons\text{CH}_3\text{COOH}(\text{aq})+\text{C}_2\text{H}_5\text{OH}(\text{aq})$
$2\text{SO}_2(\text{g})+\text{O}_2(\text{g})\rightleftharpoons2\text{SO}_3(\text{g})$

221.4J is needed to heat 30 g of ethanol from $15^{\circ} C$ to $18^{\circ} C$. Calculate (a) specific heat capacity, and (b) molar heat capacity of ethanol.

Assign the position of the element having outer electronic configuration (i) $n s^2 n p^4$ for $n=3$
(ii) $(n-1) d^2 n s^2$ for $n=4$, and (iii) $(n-2) f^7(n-1)$ $d^1 n s^2$ for $n=6$, in the periodic table.

Write the molecular orbital configuration of N₂.Calculate its bond order and predict its magnetic behaviour.