The basic strength of the hydrides of group 15 elements :

The basic strength of the hydrides of group 15 elements :
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The basic strength of the hydrides of group 15 elements : A. decreases on moving down the group ... first increases upto `AsH_(3)` and then decreases
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The basic strength of the hydrides of group 15 elements :

Description : The basic strength of the hydrides of group 15 elements :

Last Answer : The basic strength of the hydrides of group 15 elements : A. decreases on moving down the group ... first increases upto `AsH_(3)` and then decreases

(A) : Thermal stability of the hydrides of VIA group elements decreases from `H_(2)O` to `H_(2)Po` (R) : The heats of dissociation of M - H bond of hy

Description : (A) : Thermal stability of the hydrides of VIA group elements decreases from `H_(2)O` to `H_(2)Po` (R) : The heats of dissociation of M - H bond of hy

Last Answer : (A) : Thermal stability of the hydrides of VIA group elements decreases from `H_(2)O` to `H_(2)Po` (R) : ... is false D. (A) is false but (R) is true

The statements regarding hydrides of VIA group elements are i) The order of volatility `H_(2)OltH_(2)TeltH_(2)SeltH_(2)S` ii) The order of B.P `H_(2)O

Description : The statements regarding hydrides of VIA group elements are i) The order of volatility `H_(2)OltH_(2)TeltH_(2)SeltH_(2)S` ii) The order of B.P `H_(2)O

Last Answer : The statements regarding hydrides of VIA group elements are i) The order of volatility `H_(2)OltH_(2)TeltH_ ... are correct D. `i` & iii are correct

The maximum bond angle in hydrides of group 16 elements is in

Description : The maximum bond angle in hydrides of group 16 elements is in

Last Answer : The maximum bond angle in hydrides of group 16 elements is in A. `H_(2)O` B. `H_(2)Se` C. `H_(2)S` D. `H_(2)Te`

Assign the reason for the following: (a) Enthalpy of fusion of water is higher as compared to the hydrides of Sulphur & Selenium. (b) Water is quite stable and does not dissociate in to its elements even at high temperature.

Description : Assign the reason for the following: (a) Enthalpy of fusion of water is higher as compared to the hydrides of Sulphur & Selenium. (b) Water is quite stable and does not dissociate in to its elements even at high temperature.

Last Answer : Ans-a) Due hydrogen bond it has high latent heat of fusion b) Water is a stable compound and its decomposition is not thermodynamically feasible

The correct statements(s) regarding hydrides `(H_(2)E)` of group -16 is/are

Description : The correct statements(s) regarding hydrides `(H_(2)E)` of group -16 is/are

Last Answer : The correct statements(s) regarding hydrides `(H_(2)E)` of group -16 is/are A. The ... D. The reducing character of hydrides increases down the group

The correct statements(s) regarding hydrides `(H_(2)E)` of group -16 is/are

Description : The correct statements(s) regarding hydrides `(H_(2)E)` of group -16 is/are

Last Answer : The correct statements(s) regarding hydrides `(H_(2)E)` of group -16 is/are A. The ... D. The reducing character of hydrides increases down the group

The correct order of decreasing acidic strength of oxy acids of group 15 elements :

Description : The correct order of decreasing acidic strength of oxy acids of group 15 elements :

Last Answer : The correct order of decreasing acidic strength of oxy acids of group 15 elements : A. `HNO_(3) gt H_(3)SbO_(4) ... gt H_(3) PO_(4) gt H_(3) SbO_(4)`

The correct order of decreasing acidic strength of oxy acids of group 15 elements :

Description : The correct order of decreasing acidic strength of oxy acids of group 15 elements :

Last Answer : The correct order of decreasing acidic strength of oxy acids of group 15 elements : A. `HNO_(3) gt H_(3)SbO_(4) ... gt H_(3) PO_(4) gt H_(3) SbO_(4)`

Assertion :- Oxidation state of Hydrogen is `+1` in `H_(2)O` while `-1` in `CaH_(2)`. Reason :- `CaH_(2)` is a metal hydride and for metal hydrides, h

Description : Assertion :- Oxidation state of Hydrogen is `+1` in `H_(2)O` while `-1` in `CaH_(2)`. Reason :- `CaH_(2)` is a metal hydride and for metal hydrides, h

Last Answer : Assertion :- Oxidation state of Hydrogen is `+1` in `H_(2)O` while `-1` in `CaH_(2)`. ... Reason is False. D. If both Assertion & Reason are False.

`DeltaH_"vaporisation"` (KJ/mol) are given for the hydrides of halogens in the following graph. The hydride HF will correspond to

Description : `DeltaH_"vaporisation"` (KJ/mol) are given for the hydrides of halogens in the following graph. The hydride HF will correspond to

Last Answer : `DeltaH_"vaporisation"` (KJ/mol) are given for the hydrides of halogens in the following graph. The hydride HF will ... . (B)Q C. (C)R D. (D)S

Which of the following halogen hydrides will have the weakest conjugate base?

Description : Which of the following halogen hydrides will have the weakest conjugate base?

Last Answer : Which of the following halogen hydrides will have the weakest conjugate base? A. (A)HF B. (B)HCI C. (C)HBr D. (D)HI

Asseration: The thermal stability of hydrides of oxygen family decrease with molecular weight. Reason: The decomposition of `M-H` bond requires lesser

Description : Asseration: The thermal stability of hydrides of oxygen family decrease with molecular weight. Reason: The decomposition of `M-H` bond requires lesser

Last Answer : Asseration: The thermal stability of hydrides of oxygen family decrease with molecular weight. Reason: The decomposition ... in `O-H` than `S-H`.

The most acidic and most thermally stable set of chalcogen hydrides are respectively:

Description : The most acidic and most thermally stable set of chalcogen hydrides are respectively:

Last Answer : The most acidic and most thermally stable set of chalcogen hydrides are respectively: A. `H_(2)O,H_(2)s` B. `H_(2) ... )O,H_(2)Te` D. `H_(2)S,H_(2)Te`

What is covalent hydrides?

Description : What is covalent hydrides?

Last Answer : Covalent hydrides are all the other compounds of hydrogen wher hydrogen is covalently bonded- typiccally sharing an electron pair as in CH4 (methane) which could be called carbon tetrahydride ... valence electronsand hydrogen forms negative ion gaining that electron in order to complete its shell.

What is covalent hydrides?

Description : What is covalent hydrides?

Last Answer : Covalent hydrides are all the other compounds of hydrogen wher hydrogen is covalently bonded- typiccally sharing an electron pair as in CH4 (methane) which could be called carbon tetrahydride ... valence electronsand hydrogen forms negative ion gaining that electron in order to complete its shell.

What are hydrides of boron called ?

Description : What are hydrides of boron called ?

Last Answer : Boranes

What accounts for the formation of Boron Hydrides?

Description : What accounts for the formation of Boron Hydrides?

Last Answer : Ans. Because of small size of both B & H forms stable compound called Boron Hydrides.

Give two examples of Interstitial Hydrides.

Description : Give two examples of Interstitial Hydrides.

Last Answer : Ans-Transition metal hydrides are called Interstitial Hydrides T1 H1.8& T1H2 (non –stoichiometric hydrides)

what do you understand by “Non stoichiometric hydrides”? Do you think this type of hydrides to be formed by alkali metals? Justify your answer.

Description : what do you understand by “Non stoichiometric hydrides”? Do you think this type of hydrides to be formed by alkali metals? Justify your answer.

Last Answer : Ans: Hydrides which are deficient in hydrogen and in which the ratio of hydrogen to metal is fractional are called non-stoichiometric hydrides. This type of hydrides are formed by d-and ... they form only stoichiometric hydrides. In other words alkali metals do not form non-stoichiometric hydrides.

Give two examples of Interstitial Hydrides.

Description : Give two examples of Interstitial Hydrides.

Last Answer : Ans-Transition metal hydrides are called Interstitial Hydrides T1 H1.8& T1H2(non –stoichiometric hydrides)

Name the classes of Hydrides to which H2O, B2H6 & NaH belong

Description : Name the classes of Hydrides to which H2O, B2H6 & NaH belong

Last Answer : Ans. H2O—Covalent B2H6- Covalent NaH- Ionic

What do you understand by (1) electron-deficient,(ii) electron-précise and (iii) electron precise hydrides. Provide justification with suitable examples

Description : What do you understand by (1) electron-deficient,(ii) electron-précise and (iii) electron precise hydrides. Provide justification with suitable examples

Last Answer : Ans: Electron-deficient: the hydrides which contain less than eight electron in their outmost shell are called electron- deficient for exam B2H6 Electron- precise: These hydrides contain exact number of ... nomal covalent bond and are called as electron rich hydrides. For example NH3,PH3,H2O,H2S.

Give one example of electron deficient Hydrides.

Description : Give one example of electron deficient Hydrides.

Last Answer : Ans.BH3

Which one of the following statements concerning elements in the Periodic Table is correct? A Elements of the same group all have the same number of electrons in the outermost occupied electron shell. B Elements of Group 16 occur as cations in ionic compounds. C Oxides of elements in Groups 16 and 17 are basic. D The halogens (Group 17) are all gases at room temperature. E The Group 13 elements are all metals.

Description : Which one of the following statements concerning elements in the Periodic Table is correct? A Elements of the same group all have the same number of electrons in the outermost occupied electron shell. B ... (Group 17) are all gases at room temperature. E The Group 13 elements are all metals.

Last Answer : D) Are compounds that exhibit both metallic & non-metallic properties to some extent and are exemplified by elements like germanium, silicon & boron

Based on the compounds of group 15 elements, the correct statement (s) is (are)

Description : Based on the compounds of group 15 elements, the correct statement (s) is (are)

Last Answer : Based on the compounds of group 15 elements, the correct statement (s) is (are) A. `Bi_(2)O_(5) ... bond is strogner than the `P - P` single bond

The hydribes of group 15 elements act as :

Description : The hydribes of group 15 elements act as :

Last Answer : The hydribes of group 15 elements act as : A. lewis acid B. lewis base C. both D. none

Based on the compounds of group 15 elements, the correct statement (s) is (are)

Description : Based on the compounds of group 15 elements, the correct statement (s) is (are)

Last Answer : Based on the compounds of group 15 elements, the correct statement (s) is (are) A. `Bi_(2)O_(5) ... bond is strogner than the `P - P` single bond

The hydribes of group 15 elements act as :

Description : The hydribes of group 15 elements act as :

Last Answer : The hydribes of group 15 elements act as : A. lewis acid B. lewis base C. both D. none

List the elements of 15 th group of the periodic table. Name the distinct metals and non-metals of the group.

Description : List the elements of 15 th group of the periodic table. Name the distinct metals and non-metals of the group.

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Correct order of basic strength in gas phase is (I) `CH_(3)-NH_(2)` (II) `(CH_(3))_(2)NH` (III) `(CH_(3))_(3)N` (IV) `NH_(3)`

Description : Correct order of basic strength in gas phase is (I) `CH_(3)-NH_(2)` (II) `(CH_(3))_(2)NH` (III) `(CH_(3))_(3)N` (IV) `NH_(3)`

Last Answer : Correct order of basic strength in gas phase is (I) `CH_(3)-NH_(2)` (II) `(CH_(3))_(2)NH` (III) `(CH_(3))_(3 ... C` C. `A gt C gt B` D. `C gt A gt B`

Stacking elements in a transmitting antenna system A. increases the field strength at the receiving antenna B. increases the directivity of the transmitter antenna C. decrease the size of the lobe in the radiation pattern D. both A and B

Description : Stacking elements in a transmitting antenna system A. increases the field strength at the receiving antenna B. increases the directivity of the transmitter antenna C. decrease the size of the lobe in the radiation pattern D. both A and B

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Last Answer : : Option A

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