Name the alkali metal which forms only the normal oxide on heating with air ?

Name the alkali metal which forms only the normal oxide on heating with air ?
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Ans. Li.
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Related questions

When a cation is highly polarizing ? Which alkali metal cation has the highest polarizing power ?

Description : When a cation is highly polarizing ? Which alkali metal cation has the highest polarizing power ?

Last Answer : Ans. A cation is highly polarizing if its charge/size ratio is very high.Li+ has the highest polarizing power .

Name the alkali metal which shows diagonal relationship with Mg?

Description : Name the alkali metal which shows diagonal relationship with Mg?

Last Answer : Ans.Li

what are the common physical features of alkali metals?

Description : what are the common physical features of alkali metals?

Last Answer : Ans. Large Atomic and ionic radii, Low ionization enthalpies, metallic character, low melting and boiling Point, form ionic bond, low density,show flame coloration ,photoelectric effect.

Why is sodium metal kept under kerosene oil ?

Description : Why is sodium metal kept under kerosene oil ?

Last Answer : Ans. Sodium metal is highly reactive and combines with air forming sodium oxide.

Which one of the alkali metals, forms only, the normal oxide, M2O on heating in air (1) Na (2) Rb (3) K (4) Li

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Why are potassium and caesium, rather than lithium used in photoelectric cells ?

Description : Why are potassium and caesium, rather than lithium used in photoelectric cells ?

Last Answer : Ans. Potassium and caesium have much lower ionization enthalpy than that of lithium. As a result, these metals on exposure to light, easily emit electrons but lithium does not. Therefore, K and Cs rather than Li are used in photoelectric cells

why sodium is less reactive than potassium?

Description : why sodium is less reactive than potassium?

Last Answer : Ans. The ionization enthalpy of potassium is less than that of sodium and the electrode potential of Potassium (-2.95 V) is more negative than that of sodium (-2.71 V) and hence sodium is less reactive than potassium.

What are the raw material used for the manufacture of washing soda by solvay process ?

Description : What are the raw material used for the manufacture of washing soda by solvay process ?

Last Answer : Ans. Nacl, CaCO3 and NH3

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Description : Name the chief factor responsible for the anomalous behavior of lithium.

Last Answer : Ans. High polarizing power (charge/size ratio).

What happens when KO2 reacts with water ?

Description : What happens when KO2 reacts with water ?

Last Answer : Ans. 2 KO2 + 2H2O ------> 2 KOH + H2O2 + O2

Electrometallurgical methods of metal extraction is normally used for those metals (A) Whose oxide/ore is not reduced by carbon (B) Which fall in the category of alkali & alkaline earth metals (C) Which stands higher in the electrochemical series of the metal (D) All (A), (B) & (C)

Description : Electrometallurgical methods of metal extraction is normally used for those metals (A) Whose oxide/ore is not reduced by carbon (B) Which fall in the category of alkali & alkaline earth metals (C) Which stands higher in the electrochemical series of the metal (D) All (A), (B) & (C)

Last Answer : (D) All (A), (B) & (C)

Why Copper Oxide Is Not Alkali ?

Description : Why Copper Oxide Is Not Alkali ?

Last Answer : Substances that soothe the acid and destroy its characteristic properties are therefore alkaline. Alkalis are those substances which dissolve in water. Copper oxide only soothes the acid and eliminates its characteristic ... , but it does not dissolve in water. So copper oxide is not an alkali.

Metal carbonates decompose on heating to give metal oxide and carbon dioxide. Which of the metal carbonates is most stable thermally?

Description : Metal carbonates decompose on heating to give metal oxide and carbon dioxide. Which of the metal carbonates is most stable thermally?

Last Answer : Metal carbonates decompose on heating to give metal oxide and carbon dioxide. Which of the metal carbonates is most ... C. `SrCO_(3)` D. `BaCO_(3)`

The oxide of what lightweight metal forms corundum, rubies, and sapphires?

Description : The oxide of what lightweight metal forms corundum, rubies, and sapphires?

Last Answer : ANSWER: ALUMINUM

Which of the following if present in iron ore, enhances its value? (A) Alumina (B) Alkali oxide (C) Lime & Magnesia (D) None of these

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Last Answer : C) Lime & Magnesia

Which one of the following impurity is not desirable in the soil used for brick formation a) Alkali b) Kankar c) Iron oxide d) Alkali & Kankar*

Description : Which one of the following impurity is not desirable in the soil used for brick formation a) Alkali b) Kankar c) Iron oxide d) Alkali & Kankar*

Last Answer : d) Alkali & Kankar*

What is alkali metal ?

Description : What is alkali metal ?

Last Answer : The first class elements of a periodic table are called alkali metals.

An element with an atomic number of 17 is - (1) an alkali metal (2) a rare gas (3) a halogen gas (4) a transition metal

Description : An element with an atomic number of 17 is - (1) an alkali metal (2) a rare gas (3) a halogen gas (4) a transition metal

Last Answer : (3) a halogen gas Explanation: Chlorine has atomic number of 17. It is a halogen gas along with fluorine (F), bromine (Br), iodine (I), and astatine (At).

Arrange the following in order of the increasing covalent character : MCl,MBr,MF,MI ( Where M=alkali metal)

Description : Arrange the following in order of the increasing covalent character : MCl,MBr,MF,MI ( Where M=alkali metal)

Last Answer : Ans. MF < MCI < MB < MI

when an alkali metal dissolves in liquid ammonia, the solution can acquire different colors. Explain .

Description : when an alkali metal dissolves in liquid ammonia, the solution can acquire different colors. Explain .

Last Answer : Ans. The dilute solutions of alkali metals in liquid ammonia exhibit dark blue color because ammoniated electrons absorb energy corresponding the red region of the visible light. However, If the ... copper-bronze and the solution acquires metallic luster due to the formation of metal ion clusters.

Which alkali metal has the highest ionic radii ?

Description : Which alkali metal has the highest ionic radii ?

Last Answer : Ans.Cs.

Which alkali metal will have highest hydration enthalpy ?

Description : Which alkali metal will have highest hydration enthalpy ?

Last Answer : Ans. Li

Give point of resemblance of hydrogen with alkali metal.

Description : Give point of resemblance of hydrogen with alkali metal.

Last Answer : Ans: 1 like alkali metals hydrogen also has one electron in its valence shell 2 like alkali metals hydrogen loses its only electron to form proton(H+) 3 like alkalis metals hydrogen ... the same way as alkali metals are librated at the cathode during the electrolysis of their fused halides

Give reason for the appearance of colour in alkali metal halides.

Description : Give reason for the appearance of colour in alkali metal halides. 

Last Answer : Due to F-centres.

Within a given period of the periodic table, the element with the lowest ionization energy is: w) transition metal x) alkali metal y) halogen z) noble gas

Description : Within a given period of the periodic table, the element with the lowest ionization energy is: w) transition metal x) alkali metal y) halogen z) noble gas

Last Answer : ANSWER: X -- ALKALI METAL

Two samples of lead oxide were separately reduced to metallic lead by heating in a current of hydrogen. The weight of lead from one oxide was half the weight of lead obtained from the other oxide. The data illustrates [AMU 1983] (A) Law of reciprocal proportions (B) Law of constant proportions (C) Law of multiple proportions (D) Law of equivalent proportions

Description : Two samples of lead oxide were separately reduced to metallic lead by heating in a current of hydrogen. The weight of lead from one oxide was half the weight of lead obtained from the other oxide. ... (B) Law of constant proportions (C) Law of multiple proportions (D) Law of equivalent proportions

Last Answer : (C) Law of multiple proportions

The compound that on treatment with benzene sulphonyl chloride, forms a precipitate soluble in alkali, is

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Which of the following is NOT a means of preparing carbon dioxide? w) burning coke in the absence of air x) combustion of methane y) heating certain normal carbonates z) action of acids on carbonates

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Last Answer : ANSWER: W -- BURNING COKE IN THE ABSENCE OF AIR 

When ethylene glycol is heated with concentrated HNO3, it forms (a) Oxalic acid (b) Ethylene oxide (c) Dioxane (d) Diethylene glycol

Description : When ethylene glycol is heated with concentrated HNO3, it forms (a) Oxalic acid (b) Ethylene oxide (c) Dioxane (d) Diethylene glycol

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What is the most electrically positive and active metal of the alkali metal period ?

Description : What is the most electrically positive and active metal of the alkali metal period ?

Last Answer : Alkali metal is the most electrically positive and active metal of all time .

None Metal Of alkali With Reaction By No ?

Last Answer : Copper ' Of alkali With Reaction By No.

Which of the following alkali metal ions has the lowest ionic mobility in aqueous solutions?

Description : Which of the following alkali metal ions has the lowest ionic mobility in aqueous solutions?

Last Answer : Which of the following alkali metal ions has the lowest ionic mobility in aqueous solutions? A. `Li^(+)` B. `Na^(+)` C. `Rb^(+)` D. `Cs^(+)`

The ease of adsorption of the hydrated alkali metal ions on ion-exchange resins follows the order:

Description : The ease of adsorption of the hydrated alkali metal ions on ion-exchange resins follows the order:

Last Answer : The ease of adsorption of the hydrated alkali metal ions on ion-exchange resins follows the order: A. `K^(+)lt Na + ... (+)lt K^(+)lt Na^(+)lt Li^(+)`

Alkali metal hydrogen fluorides have a formula `M[HF_2]`. They are found to contain a linear symmetrical anion having an overall F—H—F distance of 2.2

Description : Alkali metal hydrogen fluorides have a formula `M[HF_2]`. They are found to contain a linear symmetrical anion having an overall F—H—F distance of 2.2

Last Answer : Alkali metal hydrogen fluorides have a formula `M[HF_2]`. They are found to contain a linear symmetrical ... F-atoms through two T bonds in the anion.

Alkali metal salt "X" gives a pale violet colour in flame test "X" is :

Description : Alkali metal salt "X" gives a pale violet colour in flame test "X" is :

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`Mf + XeF_(4) rarr M^(+) A^(-) (M^(+)-` alkali metal cation) The state of hybridisation of the central atom in A and sphere of the species are:

Description : `Mf + XeF_(4) rarr M^(+) A^(-) (M^(+)-` alkali metal cation) The state of hybridisation of the central atom in A and sphere of the species are:

Last Answer : `Mf + XeF_(4) rarr M^(+) A^(-) (M^(+)-` alkali metal cation) The state of hybridisation of ... )d^(3)`, pentagonal planar D. no compound formed at all

Why alkali metal have low ionization energy?

Description : Why alkali metal have low ionization energy?

Last Answer : Ionization energy is the energy required to remove an electronfrom an atom or ion. Low ionization energy indicates that it takesless energy to remove an electron from the atom. The alkali ... are more and more electrons in theoutermost energy level, requiring more energy to remove anelectron.

Why alkali metal have low ionization energy?

Description : Why alkali metal have low ionization energy?

Last Answer : Ionization energy is the energy required to remove an electronfrom an atom or ion. Low ionization energy indicates that it takesless energy to remove an electron from the atom. The alkali ... are more and more electrons in theoutermost energy level, requiring more energy to remove anelectron.

Which element is in the alkali metal family?

Description : Which element is in the alkali metal family?

Last Answer : Lithium (Li) APEX

Which of the following properties is not true for an alkali metal? (a) Low electronegativity (b) Low ionisation energy (c) Low atomic volume (d) Low density

Description : Which of the following properties is not true for an alkali metal? (a) Low electronegativity (b) Low ionisation energy (c) Low atomic volume (d) Low density

Last Answer : Ans:(c)

The solubility of the alkali metal carbonates (a) Decreases as we go down the group (b) Increases as we go down the group (c) Increases at first and then decreases (d) Does not show regular variation

Description : The solubility of the alkali metal carbonates (a) Decreases as we go down the group (b) Increases as we go down the group (c) Increases at first and then decreases (d) Does not show regular variation

Last Answer : Ans:(b)

Most abundant alkali metal is?

Description : Most abundant alkali metal is?

Last Answer : Sodium (Na)

Which alkali metal is denser than water?

Description : Which alkali metal is denser than water?

Last Answer : Lithium

The metal shows the characteristics of both acid and alkali?

Description : The metal shows the characteristics of both acid and alkali?

Last Answer : Aluminium

An alkali metal salt of Palmitic acid is known as (A) Soap (B) Metallic soap (C) Detergent (D) Alkaloid

Description : An alkali metal salt of Palmitic acid is known as (A) Soap (B) Metallic soap (C) Detergent (D) Alkaloid

Last Answer : (B) Metallic soap

You are provided with magnesium ribbon and sulpher powder. Explain with the help of an activity that metal oxides are basic and non-metal oxide are acidic in nature. -Chemistry

Description : You are provided with magnesium ribbon and sulpher powder. Explain with the help of an activity that metal oxides are basic and non-metal oxide are acidic in nature. -Chemistry

Last Answer : Aim: To test the nature of oxides formed by metals and non-metals. Materials Required: Sulphur powder, Mg ribbon, water, blue litmus paper, red litmus paper. Procedure: 1.Take magnesium ribbon ... the metallic oxides are basic in nature whereas most of the non-metallic oxides are acidic in nature.

Why Transient Metal Oxide Is Used To Make Stained Glass ?

Description : Why Transient Metal Oxide Is Used To Make Stained Glass ?

Last Answer : Degeneration of electrons occurs in the d orbitals of their last orbits when transition metals form compounds . So their compounds (silicates) are colored. This is why transition metal oxides are used to make stained glass.

What will be formed when a metal oxide dissolves in water?

Description : What will be formed when a metal oxide dissolves in water?

Last Answer : ANSWER: A BASE

What metal is used as a reducing agent to obtain iron from iron oxide in the Thermite process?

Description : What metal is used as a reducing agent to obtain iron from iron oxide in the Thermite process?

Last Answer : ANSWER: ALUMINUM 

Which metal does not undergo corrosion due to the formation of oxide layer? (1) Copper (2) Iron (3) Aluminium (4) Zinc

Description : Which metal does not undergo corrosion due to the formation of oxide layer? (1) Copper (2) Iron (3) Aluminium (4) Zinc

Last Answer : Aluminium