Consider the following reactions: Xe + F 2 → Ni A 2 : 1 Xe + F 2 → B 1 : 20 Xe + F 2 → C 1 : 5 Select incorrect statements.

B has no lone pair of electrons

The order of Xe - F bond length is A > C > B

A , B and C are act as lewis base.

The Solvay process can be represented by the following scheme: identify A , B , C , D and E .

The Solvay process or ammonia-soda process is the major industrial process for the production of sodium carbonate. The raw materials of the process are – sodium chloride, calcium carbonate, ammonia. In the first step in the process, carbon dioxide passes through a concentrated aqueous solution of sodium chloride and ammonia. The hot ammonium chloride solution then reacted with the quicklime. The principal byproduct of the Solvay process is calcium chloride in aqueous solution. i CaO + H 2 O → Ca ( OH ) 2 A ii NH 3 + H 2 O + CO 2 → NH 4 HCO 3 B iii 2 NaHCO 3 → Na 2 CO 3 C + CO 2 + H 2 O iv NH 4 HCO 3 + NaCl → NaHCO 3 + NH 4 Cl D v 2 NH 4 Cl + Ca ( OH ) 2 → 2 NH 3 + 2 H 2 O + CaCl 2 E Thus, A = Ca ( OH ) 2 B = NH 4 HCO 3 C = Na 2 CO 3 D = NH 4 Cl E = CaCl 2

Phosphine is generally prepared in the laboratory by

heating white phosphorus with an aqueous solution of caustic soda.

heating phosphorus in a current of hydrogen.

decomposition of P 2 H 4 at 110 ° C .

heating red phosphorus with an aqueous solution of caustic soda.

What is inert pair effect?

The inert pair effect is the reluctance of s electrons of the outermost shell to participate in bonding. This is due to the poor screening effect of the d and f orbitals. This effect is observed among the p -block elements, due to which the lower oxidation state (two units less than the group oxidation state) becomes more stable for heavier elements in each group. For example in Pb , + 2 oxidation state is more predominant than the + 4 oxidation state.

Among the following, the correct statement(s) is(are)

The Lewis acidity of B C l 3 is greater than that of A l C l 3 .

A l C l 3 has the three-centre two-electron bonds in its dimeric structure.

E M B I B E

Alpha Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>Exercise-2>Q 199

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Which of the following statement are true regarding interhalogens:

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Important Questions on The p-Block Elements

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Alpha Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>Exercise-2>Q 200

Which of the following inert gas(es) form(s) clathrate compoud(s) with quinol?

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Alpha Question Bank for Engineering: Chemistry>Chapter 19 - The p-Block Elements>Exercise-2>Q 201

Consider the following reactions:

$\begin{matrix} Xe & + & F_{2} & \overset{Ni}{\to} & A \\ 2 & : & 1 \\ Xe & + & F_{2} & \to & B \\ 1 & : & 20 \\ Xe & + & F_{2} & \to & C \\ 1 & : & 5 \end{matrix}$