Description : Asseration: The first real compound of the noble gases in `1962 "was" Xe^(+)[PtF_(6)]^(-)`. Reason: The discovery was based on the basis of comparable
Last Answer : Asseration: The first real compound of the noble gases in `1962 "was" Xe^(+)[PtF_(6)]^(-)` ... `. A. tetrahedral B. pyramidal C. octahedral D. angular
Description : Among noble gases, Xe is quite reactive and form a number of fluorides and oxyfluorides. In these compounds the electrons, from 5p orbitals are excite
Last Answer : Among noble gases, Xe is quite reactive and form a number of fluorides and oxyfluorides. In these ... B. Square pyramid C. square planar D. octahedral
Last Answer : Among noble gases, Xe is quite reactive and form a number of fluorides and oxyfluorides. In these compounds ... `XeF_(2)` and tetraheddral `XeO_(3)`
Last Answer : Among noble gases, Xe is quite reactive and form a number of fluorides and oxyfluorides. In these compounds the ... ` C. `XeO_(2)F_(2)` D. Xe
Description : The formation of `O_(2)^(+)[PtF_(6)]^(-)` is the basis for the formation of xenon fluorides. This is because:
Last Answer : The formation of `O_(2)^(+)[PtF_(6)]^(-)` is the basis for the formation of xenon ... energies. D. `O_2` and Xe have comparable electronegativities.
Description : Asseration: Number of `S-S` bonds in `H_(2)S_(n)O_(6)` is (n-1). Reason: `H_(2)S_(n)O_(6)` shows `HO_(3)S-underset((n-2))(S)-SO_(3)H`
Last Answer : Asseration: Number of `S-S` bonds in `H_(2)S_(n)O_(6)` is (n-1). Reason: `H_(2)S_(n)O_(6)` shows `HO_(3)S-underset((n-2))(S)-SO_(3)H`
Description : When `PtE_(6)` vapour mixed with an equal volume of Xe, the gases combined immediatedly at room temperature and produces a yellow solid X at `66^(@)C`
Last Answer : When `PtE_(6)` vapour mixed with an equal volume of Xe, the gases combined immediatedly at room temperature and produces ... ]^(+) [Pt_(2)F_(11)]^(-)`
Description : Asseration: `3SnCl_(2)+6HCl+O_(3)rarr3SnCl_(4)+3H_(2)O` is possible reaction showing oxidising nature of `O_(3)`. Reason: `O_(3)` whenever used as oxi
Last Answer : Asseration: `3SnCl_(2)+6HCl+O_(3)rarr3SnCl_(4)+3H_(2)O` is possible reaction showing oxidising ... as oxidising agent essentially liberates `O_(2)`.
Description : Asseration: `SeCl_(4)`, does not havea tetrahedral structure. Reason: `Se` in `SeCl_(4)` has two lone pairs.
Last Answer : Asseration: `SeCl_(4)`, does not havea tetrahedral structure. Reason: `Se` in `SeCl_(4)` has two lone pairs.
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`.
Description : Asseration: Cyclic trimer of `SO_(3)` possesses have six membered hetero-cyclic chains made up of `S` and `O`-atoms Reason: Cyclic trimer of `SO_(3)`
Last Answer : Asseration: Cyclic trimer of `SO_(3)` possesses have six membered hetero-cyclic chains made up of `S` and ` ... SO_(3)` is referred as `gamma-SO_(3)`.
Last Answer : Asseration: Cyclic trimer of `SO_(3)` possesses have six membered hetero-cyclic chains made up of `S` and ` ... C. `2,12sigma,4pi` D. `4,12sigma, 3pi`
Last Answer : Asseration: Cyclic trimer of `SO_(3)` possesses have six membered hetero-cyclic chains made up of ` ... -I is not correct and Statement-II is correct
Last Answer : Asseration: `3SnCl_(2)+6HCl+O_(3)rarr3SnCl_(4)+3H_(2)O` is possible reaction showing oxidising ... -I is not correct and Statement-II is correct
Description : `XeF_(6)` reacts with silica to form xenon compound X. The oxidation state of Xe in X is :
Last Answer : `XeF_(6)` reacts with silica to form xenon compound X. The oxidation state of Xe in X is :
Description : In the preparation of compounds of Xe, Bartlett has taken `O_(2)^(+)Pt F_(6)^(-)` as a base compound. This is becase
Last Answer : In the preparation of compounds of Xe, Bartlett has taken `O_(2)^(+)Pt F_(6)^(-)` as a base compound ... enthalpy. D. both Xe and `O_(2)` are gases.
Description : Give reason: Elements of group 18 or group zero are called inert or noble gases.
Last Answer : Elements of group 18 do not form chemical bond on their own with other elements as they have completed shells of electrons. They have no tendency to gain or lose electrons. Hence they are most un-reactive
Description : Who is awarded by noble prize for the discovery is neutron?
Last Answer : Chadwick
Description : Max Planck received the noble prize in Physics in 1918 for his discovery of ? A. electron B. energy quanta (Answer) C. photon D. positron
Last Answer : B. energy quanta (Answer)
Description : Who is awarded by noble prize for the discovery is neutron
Description : In 1962, at Argonne National Laboratory, Neil Bartlett first synthesized what type of compound?
Last Answer : ANSWER: A XENON COMPOUND WAS FORMED or A NOBLE GAS COMPOUND WAS FORMED
Description : The customs control based on the Indians customs act 1962 is for a) The imposition of export or import duties b) For ensuring the observance of the provisions of import and export control act c) For ensuring the observation of foreign exchange regulation act d) All of the above
Last Answer : d) All of the above
Description : How many of the following properties of noble gases would increase from Helium to Radon? Boiling point, First lonisation enthalpy, Atomic volume, Abun
Last Answer : How many of the following properties of noble gases would increase from Helium to Radon? ... Density at STP. Valence electrons, Critical temperature.
Description : which of the following is not true in regard to noble gases? -General Knowledge
Last Answer : These elements tend to gain or lose electrons easily. -is not true in regard to noble gases.
Description : The correct order of boiling point of noble gases is :
Last Answer : The correct order of boiling point of noble gases is : A. `Xe lt Kr lt Ar lt Ne` B. `Kr lt Xe lt Ar lt Ne ... lt Kr lt Ne` D. ` Xe gt Kr gt Ar gt Ne`
Description : The noble gases have closed-shell electronic configuration and are monoatomic gases under normal conditions. The low boiling points of the lighter nob
Last Answer : The noble gases have closed-shell electronic configuration and are monoatomic gases under normal conditions. ... (C) unreactive D. (D) strongly basic
Description : The noble gases have closed-shell electronic cordigaration and are monatomic gases under normal condition .The low bolling points of the ligher noble
Last Answer : The noble gases have closed-shell electronic cordigaration and are monatomic gases under normal condition .The low ... (C) pyramidal D. (D) T-shaped
Last Answer : The noble gases have closed-shell electronic configuration and are monoatomic gases under normal ... flammablity D. (D) high calorific value
Description : Consider following properties of the noble gases. I. They readily form compounds which are colourless. II: They generally do not form ionic compounds.
Last Answer : Consider following properties of the noble gases. I. They readily form compounds which are colourless. II: They ... IV C. I,III,IV D. (D) All
Description : The order of solubility of noble gases in water is
Last Answer : The order of solubility of noble gases in water is A. (A)HegtArgtKrgtNegtXe B. (B)HegtNegtArgtKrgtXe C. (C)XegtArgtKrgtHegtNe D. (D)XegtKrgtArgtNegtHe
Description : Which one of the following noble gases is not found in atmosphere ?
Last Answer : Which one of the following noble gases is not found in atmosphere ? A. (A) Rn B. (B) Kr C. Ne D. (D) Ar
Description : The chemical reactivity of noble gases involves the loss of electrons and hence it can form compounds with highly electronegative elements like F and
Last Answer : The chemical reactivity of noble gases involves the loss of electrons and hence it can form compounds with ... )d` and linear D. `sp` and linear
Last Answer : The chemical reactivity of noble gases involves the loss of electrons and hence it can form compounds with highly ... D. `sp^(3)d^(2)` & 2
Last Answer : The chemical reactivity of noble gases involves the loss of electrons and hence it can form compounds with highly ... A. zero B. 2 C. 6 D. 8
Last Answer : The noble gases have closed-shell electronic configuration and are monoatomic gases under normal ... reducing C. unreactive D. strongly basic
Last Answer : The noble gases have closed-shell electronic cordigaration and are monatomic gases under normal condition .The ... B. planar C. pyramidal D. T-shaped
Last Answer : The noble gases have closed-shell electronic cordigaration and are monatomic gases under normal condition ... C. flammability D. high calorific value
Description : The noble gases which do not form any clatherate
Last Answer : The noble gases which do not form any clatherate A. He B. Ar C. Kr D. Xe
Description : Which of the following noble gases do not reasct with function
Last Answer : Which of the following noble gases do not reasct with function A. Xe B. He C. Ar D. Kr
Description : Which of the noble gases is the least polarized?
Last Answer : Which of the noble gases is the least polarized? A. Radon B. Krypton C. Xenon D. Helium
Description : The correct order of enthalpy of vaporisation of noble gases is
Last Answer : The correct order of enthalpy of vaporisation of noble gases is A. `Xe gt Kr gt Ar Ne gt He` B. `Xe gt Ar ... gt Xe` D. `Ne gt Xe gt Kr gt He gt Ar`
Description : Which one of the following noble gases is not found in atmoshphere?
Last Answer : Which one of the following noble gases is not found in atmoshphere? A. Rn B. Kr C. Ne D. Ar
Description : Noble gases are group of elements which exhibit very :
Last Answer : Noble gases are group of elements which exhibit very : A. High chemical activity B. Much ... C. Maximum electronegativity D. Low chemical activity
Description : Which of the following noble gases is used in the treatment of cancer ?
Last Answer : Which of the following noble gases is used in the treatment of cancer ? A. Xe B. Ar C. Rn D. Kr
Description : The ease of liquefaction of noble gases decreases in the order
Last Answer : The ease of liquefaction of noble gases decreases in the order A. `He gt Ne gt Ar gt Kr gt Xe` B. `Xe gt Kr ... gt Ne` D. `Ar gt Kr gt Xe gt He gt Ne`
Description : The solubility of noble gases in water shows the order
Last Answer : The solubility of noble gases in water shows the order A. `He gr Ar gt Kr gt Ne gt Xe` B. `He gt Ne ... Xe gt Kr gt Ar gt Ne gt He` D. None of these
Description : Which statement about noble gases is not correct ?
Last Answer : Which statement about noble gases is not correct ? A. Xe forms `XeF_(6)` B. Ar is used in ... He has the lowest b.pt among all the noble gases
Description : Among noble gases, only xenon reacts with flourine to form stable xenon fluorides, because xenon
Last Answer : Among noble gases, only xenon reacts with flourine to form stable xenon fluorides, because xenon A. ... D. is the most readily available noble gas
Description : Amomng noble gases, only xenon can form more number of compounds. This is due to ti its
Last Answer : Amomng noble gases, only xenon can form more number of compounds. This is due to ti its A. High ... C. Small size D. less than zero electron affinity
Description : Noble gases form compounds very easily with
Last Answer : Noble gases form compounds very easily with A. Sulphur B. Nitrogen C. Oxygen D. Fluorine