P Block Elements

AB₃ is an interhalogen T-shaped molecule. The number of lone pairs of electrons on A is________. (Integer answer)

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For AB₃ interhalogen compound, which is T-shaped, only two lone pair electrons are available on central atom.

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2 months ago

The incorrect statement is:

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Reactivity order of halogens and inter halogens are F₂ > ClF > Cl₂ and ClF forms HOCl and HF after the reaction with water.

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The number of non-ionisable hydrogen atoms present in the final product obtained from the hydrolysis of PCl₅ is:

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alok kumar singh

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All hydrogens are attached to oxygen are ionisable.

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When borax is heated with CoO on a platinum loop, blue coloured bead formed is largely due to

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Cobalt (II) meta borate is a blue colour of Bead.

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Portland cement contains 'X' to enhance the setting time. What is 'X'?

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Here 'X' is the Gypsum (CaSO₄.2H₂O) which is used to enhance the setting of time.

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Given below are two statements.

Statement I: Stannane is an example of a molecular hydride.

Statement II: Stannane is a planar molecule.

In the light of the above statement, choose the most appropriate answer from the options given below.

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Stannane is the tetrahedral shape of molecule.

Hybridisation is- sp³, shape and structure are tetrahedral

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2 months ago

Consider the following reactions:

PCl₃ + H₂O -> A + HCl

A + H₂O -> B + HCl

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Number of replaceable H is 2.

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The number of bridged oxygen atoms present in compound B formed form the following reaction is $P b {(N O_{3})}_{2} \overset{673 K}{\to} A + P b O + O_{2}$

$A \overset{D i m e r i s e}{\to} B$

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$P b {(N O_{3})}_{2} \to_{673 K}^{Δ} P b O + \underset{(A)}{N O_{2}} + O_{2}$

$\underset{(A)}{N O_{2}} \to_{}^{D i m e r i s e} \underset{(B)}{N_{2} O_{4}}$

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2 months ago

Match List I with List II:

List I (molecule)		List II (hybridization; shape)
A.	Sulphate	I.	Pesticide
B.	Fluoride	II.	Bending of bones
C.	Nicotine	III.	Laxative effect
D.	Sodium arsinite	IV.	Herbicide

Choose the correct answer form the options given below

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Based upon the properties and uses of chemical substances.

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2 months ago

Heating white phosphorous with conc. NaOH solution gives mainly:

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