Advertisements
Advertisements
प्रश्न
Answer the following.
Acidic character of hydrides of group 16 elements increases from H2O to H2Te. Explain.
Advertisements
उत्तर
The acidic character of the hydrides increases from H2O to H2Te because the bond dissociation enthalpy of the H–E bond decreases down the group. (where, E = O, S, Se, Te)
APPEARS IN
संबंधित प्रश्न
Select appropriate answers for the following.
Stability of interhalogen compounds follows the order _______.
Select appropriate answers for the following.
BrCl reacts with water to form _______.
Select appropriate answers for the following.
Chlorine reacts with excess of fluorine to form _______.
In interhalogen compounds, which of the following halogens is never the central atom?
Select appropriate answers for the following.
Which of the following has one lone pair of electrons?
Select appropriate answers for the following.
In which of the following pairs, molecules are paired with their correct shapes?
Select appropriate answers for the following.
Among the known interhalogen compounds, the maximum number of atoms is _______.
Answer the following.
What is the oxidation state of Te in TeO3?
Fluorine shows only –1 oxidation state while other halogens show –1, +1, +3, +5 and +7 oxidation states. Explain.
Answer the following.
Distinguish between rhombic sulfur and monoclinic sulfur.
Acidic strength of halogen acids increases in the order of _______.
The halide that undergoes sp3d hybridisation is ____________.
Identify the properties of group 17 elements that show decreasing trend down the group.
i. Atomic radius
ii. Ionisation enthalpy
iii. Electronegativity
Which of the following is INCORRECT with respect to given reaction?
\[\ce{C6H12O6 + 6O2 -> 6CO2 + 6H2O}\]
Which of the following oxyacid of chlorine has highest thermal stability?
Which is the lowest oxidation state possessed by chlorine in it's oxyacids?
The maximum positive oxidation state shown by halogen is ______.
What is the highest oxidation state possessed by chlorine in its oxyacids?
Which halide of magnesium has highest ionic character?
Which among the following compounds does not act as reducing agent?
Consider the following reaction.
I. \[\ce{Na2B4O7 ->[760° C] {...A...} + B2O3}\]
II. \[\ce{Si + KOH + H2O ->{...B...} + H2\uparrow}\]
III. \[\ce{P2O5 + HNO3 -> HPO3 + {...C...}}\]
IV. \[\ce{NH3 + Cl2(excess) -> {...D...} + HCl}\]
Identify the missing products of the given reactions.
Give two reactions showing oxidising property of concentrated H2SO4. Write the structures of HClO3 and HClO4.
What is the action of hydrochloric acid on the following?
NH3
Arrange the following in the increasing order of the property mentioned:
\[\ce{HOCl}\], \[\ce{HClO2}\], \[\ce{HClO3}\], \[\ce{HClO4}\] (acidic strength)
