EASY
Earn 100

Assertion : Pbl4 does not exist because
Reason : Energy released during the formation of initially formed Pb-I bond is not enough to unpair 6s2 electrons and excite one of them to higher orbital to have four unpaired electrons around the lead atom.

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Important Questions on The p-Block Elements

EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 17 Elements
The molecule with the highest dipole moment among the following is
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Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 17 Elements
Arrange the hydra-acids of halogens in increasing order of acidity.
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Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 17 Elements
Which among the following is the strongest acid ?
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Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 17 Elements
Among the following reactions of hydrogen with halogens, the one that requires a catalyst is:
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Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 17 Elements
Which one of the following reactions does not come under hydrolysis type reaction?
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Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 17 Elements
The photographic industry relies on the special light sensitive properties of
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 17 Elements
Which of the following has the maximum vapour pressure?
MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 17 Elements
Which one of the following correctly represents the order of stability of oxides, X2O; (X= halogen ) ?
MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 17 Elements
Chlorine on reaction with excess of ammonia gives nitrogen gas along with a compound X. X reacts with Ca(OH)2 and gives Y, a colourless gas with pungent smell. Y on reaction with excess of chlorine gives Z and HCl. What is Z ?
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 17 Elements
Which of the following statements is not true for the reaction, 2F2+2H2O→4HF+O2
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 17 Elements
Which of the following is the CORRECT reason for HI solution turning brown on exposure to air ?
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 17 Elements
The non-metal that does not exhibit positive oxidation state is:
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Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 17 Elements
IF7 is known to exist while BrF7 does not exist. The reason is
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Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 17 Elements
Which of the statement given below is incorrect?
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 17 Elements

Statement I: Acid strength increases in the order given as

HF<<HCl<<HBr<<HI

Statement II:
As the size of the elements F, Cl, Br, I increases down the group, the bond strength of HF, HCl HBr and HI decreases and so the acid strength increases.

In the light of the above statements, choose the correct answer from the options given below.

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Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 17 Elements
Which of the following statements is not true for halogens?
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 17 Elements
Which of the following compound is formed when I2 is dissolved in ammonium hydroxide (density =0.88 g/cm3 )?
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Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 17 Elements
The reactive species in chlorine bleach is
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Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 17 Elements
Which of the following statement is correct?
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Chemistry>Inorganic Chemistry>The p-Block Elements>Important Compounds of Group 17 Elements
Chlorine water on standing loses its color and forms: