Who of these has the smallest radius Lithium Oxygen Potassium or Sulfur?

Who of these has the smallest radius Lithium Oxygen Potassium or Sulfur?
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a. Which atom should have smaller ionization enthalpy, oxygen or sulfur? b. The lithium forms +1 ions while berylium forms +2 ions ?

Description : a. Which atom should have smaller ionization enthalpy, oxygen or sulfur? b. The lithium forms +1 ions while berylium forms +2 ions ?

Last Answer : With the help of diagram answer the questions given below : a. Which atom should have smaller ... forms +1 ions while berylium forms +2 ions ?

The element used in treating manic depression is: w) sulfur x) nitrogen y) calcium z) lithium

Description : The element used in treating manic depression is: w) sulfur x) nitrogen y) calcium z) lithium

Last Answer : ANSWER: Z -- LITHIUM 

What is a mixture of potassium nitrate powdered charcoal and sulfur called? (1) paint (2) aluminum (3) brass (4) gun powder

Description : What is a mixture of potassium nitrate powdered charcoal and sulfur called? (1) paint (2) aluminum (3) brass (4) gun powder

Last Answer : (4) gun powder Explanation: Gun powder is the mixture of potassium nitrate powdered charcoal and sulfur.

Lithium, sodium and potassium form a Dobereiner’s triad. The atomic masses of lithium and potassium are 7 and 39 respectively. Predict the atomic mass of sodium. -Science

Description : Lithium, sodium and potassium form a Dobereiner’s triad. The atomic masses of lithium and potassium are 7 and 39 respectively. Predict the atomic mass of sodium. -Science

Last Answer : Lithium, sodium and potassium form a Dobereiner's triad. The atomic masses of lithium and potassium are 7 and 39 respectively. Predict the atomic mass of sodium. Therefore, the atomic mass of sodium = average of the atomic mass of lithium and potassium = 23.

A 55-year-old patient currently receiving other drugs for another condition is to be started on diuretic therapy for mild heart failure. Thiazides are known to reduce the excretion of (a) Diazepam (b) Fluoxetine (c) Imipramine (d) Lithium (e) Potassium

Description : A 55-year-old patient currently receiving other drugs for another condition is to be started on diuretic therapy for mild heart failure. Thiazides are known to reduce the excretion of (a) Diazepam (b) Fluoxetine (c) Imipramine (d) Lithium (e) Potassium

Last Answer : Ans: D

Which one of the following metals does not react with water to produce Hydrogen? (1) Cadmium (2) Lithium (3) Potassium (4) Sodium

Description : Which one of the following metals does not react with water to produce Hydrogen? (1) Cadmium (2) Lithium (3) Potassium (4) Sodium

Last Answer : (1) Cadmium Explanation: A cadmium metal does not react with water to produce Hydrogen.

Which of the following metal has the lowest melting point? (1) Lead (2) Lithium (3) Potassium (4) Sodium

Description : Which of the following metal has the lowest melting point? (1) Lead (2) Lithium (3) Potassium (4) Sodium

Last Answer : (3) Potassium Explanation: Here, Potassium has the lowest melting point in the given options i.e. 63.5° C. Helium has the lowest melting point of -272.2° C.

Which one of the following metals does not react with water to produce Hydrogen ? (1) Potassium (2) Cadmium (3) Sodium (4) Lithium

Description : Which one of the following metals does not react with water to produce Hydrogen ? (1) Potassium (2) Cadmium (3) Sodium (4) Lithium

Last Answer : (2) Cadmium Explanation: Cadmium is a soft, malleable, ductile, bluish-white divalent metal. It is similar in many respects to zinc but forms complex compounds. Unlike other metals, cadmium is ... occurs as a minor component in most zinc ores and therefore is a byproduct of zinc production.

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

Which one of the following metals does not react with water to produce Hydrogen ? (1) Potassium (2) Cadmium (3) Sodium (4) Lithium

Description : Which one of the following metals does not react with water to produce Hydrogen ? (1) Potassium (2) Cadmium (3) Sodium (4) Lithium

Last Answer : Cadmium

Which of the following alkali metals has highest specific heat? (1) Caesium (2) Rubidium (3) Potassium (4) Lithium

Description : Which of the following alkali metals has highest specific heat? (1) Caesium (2) Rubidium (3) Potassium (4) Lithium

Last Answer : Lithium

Sulfur is oxidized by oxygen to form a gas ?

Last Answer : : Sulfur reacts with oxygen to produce so3 gas

How many atoms of aluminum sulfur and oxygen are in 3 molecules of aluminum sulfate?

Description : How many atoms of aluminum sulfur and oxygen are in 3 molecules of aluminum sulfate?

Last Answer : 1 formula unit of aluminum sulfate has the formula Al2(SO4)3. Sothere are 2 atoms of aluminum, 3 atoms of sulfur and 12 atoms ofoxygen in 1 formula unit of aluminum sulfate. There are nomolecules of aluminum sulfate. They are called formula units.

What Elements in order of increasing size sulfur silicon oxygen aluminum and neon?

Description : What Elements in order of increasing size sulfur silicon oxygen aluminum and neon?

Last Answer : Elements in order of increasing size of the covalent atomicradius: neon, oxygen, sulfur, silicon, aluminum.

The sun is made up of 99.9% of -------- and -------? A. Oxygen and Hydrogen B. Hydrogen and Sulfur C. Carbon and Silicon D. Hydrogen and Helium (Answer)

Description : The sun is made up of 99.9% of -------- and -------? A. Oxygen and Hydrogen B. Hydrogen and Sulfur C. Carbon and Silicon D. Hydrogen and Helium (Answer)

Last Answer : D. Hydrogen and Helium (Answer)

Thiols are alcohol analogs in which the oxygen has been replaced by sulfur (e.g., CH3SH). Given the fact that the S–H bond is less polar than the O–H bond, which of the following statements comparing thiols and alcohols is correct? (a) Hydrogen bonding forces are weaker in thiols. (b) Hydrogen bonding forces are stronger in thiols. (c) Hydrogen bonding forces would be the same. (d) No comparison can be made without additional information

Description : Thiols are alcohol analogs in which the oxygen has been replaced by sulfur (e.g., CH3SH). Given the fact that the S-H bond is less polar than the O-H bond, which of the following ... (c) Hydrogen bonding forces would be the same. (d) No comparison can be made without additional information

Last Answer : Hydrogen bonding forces are weaker in thiols.

The element least likely to be found in an organic compound is (a) oxygen (b) sulfur (c) nitrogen (d) silicon

Description : The element least likely to be found in an organic compound is (a) oxygen (b) sulfur (c) nitrogen (d) silicon

Last Answer : silicon

Which of the following does not produce oxygen as a product of photosynthesis? A.Oak trees B.Purple sulfur bacteria C.CyanobacteriaD.Phytoplankton

Description : Which of the following does not produce oxygen as a product of photosynthesis? A.Oak trees B.Purple sulfur bacteria C.Cyanobacteria D.Phytoplankton

Last Answer : B.Purple sulfur bacteria

Which of the following does not produce oxygen as a product of photosynthesis? A- A.Oak trees B.Purple sulfur bacteria C.Cyanobacteria D.Phytoplankton

Description : Which of the following does not produce oxygen as a product of photosynthesis? A- A.Oak trees B.Purple sulfur bacteria C.Cyanobacteria D.Phytoplankton

Last Answer : Purple sulfur bacteria

Global climate change is being attributed to the atmospheric increase in what two gases produced by human activities? w) oxygen and hydrogen x) ozone and methane y) nitrous oxide and sulfur dioxide z) methane and carbon dioxide e) ozone and carbon monoxide

Description : Global climate change is being attributed to the atmospheric increase in what two gases produced by human activities? w) oxygen and hydrogen x) ozone and methane y) nitrous oxide and sulfur dioxide z) methane and carbon dioxide e) ozone and carbon monoxide

Last Answer : ANSWER: Z -- METHANE AND CARBON DIOXIDE

The hydrocarbon end of a detergent molecule is: w) hydrophilic x) hydrophobic y) possible ionic z) contains oxygen or sulfur

Description : The hydrocarbon end of a detergent molecule is: w) hydrophilic x) hydrophobic y) possible ionic z) contains oxygen or sulfur

Last Answer : ANSWER: HYDROPHOBIC

Which of the following materials are used in the manufacture of pig iron from iron ore? w) Limestone and carbon x) Calcium oxide and oxygen y) Chromium and nickel z) Oxygen and sulfur dioxide

Description : Which of the following materials are used in the manufacture of pig iron from iron ore? w) Limestone and carbon x) Calcium oxide and oxygen y) Chromium and nickel z) Oxygen and sulfur dioxide

Last Answer : ANSWER: W -- LIMESTONE AND CARBON

Which of the following are alloying materials used the manufacture of stainless steel? w) Limestone and carbon x) Calcium oxide and oxygen y) Oxygen and sulfur dioxide z) Chromium and nickel

Description : Which of the following are alloying materials used the manufacture of stainless steel? w) Limestone and carbon x) Calcium oxide and oxygen y) Oxygen and sulfur dioxide z) Chromium and nickel

Last Answer : ANSWER: Z -- CHROMIUM AND NICKEL

Which of the following elements can form the great number of covalent bonds? w) carbon x) nitrogen y) oxygen z) sulfur

Description : Which of the following elements can form the great number of covalent bonds? w) carbon x) nitrogen y) oxygen z) sulfur 

Last Answer : ANSWER: Z -- SULFUR

Which one of the following elements exhibits the greatest tendency to lose electrons? (1) Fluorine (2) Lithium (3) Oxygen (4) Zine

Description : Which one of the following elements exhibits the greatest tendency to lose electrons? (1) Fluorine (2) Lithium (3) Oxygen (4) Zine

Last Answer : (2) Lithium Explanation: Alkali metals such as Lithium are the most electropositive elements in the periodic table. As alkali metals have low ionization energies, they have a great tendency to lose electrons forming unipositive ions.

Alpha particle is the nucleus of an atom of – (1) Lithium (2) Hydrogen (3) Helium (4) Oxygen

Description : Alpha particle is the nucleus of an atom of – (1) Lithium (2) Hydrogen (3) Helium (4) Oxygen

Last Answer : (3) Helium Explanation: Alpha particles consist of two protons and two neutrons bound together into a particle identical to a helium nucleus, which is generally produced in the process of alpha decay.

Which of the following elements has the highest electronegativity? w) Lithium x) Iodine y) Cesium z) Oxygen

Description : Which of the following elements has the highest electronegativity? w) Lithium x) Iodine y) Cesium z) Oxygen

Last Answer : ANSWER: D -- OXYGEN

Which one of the following elements exhibits the greatest tendency to lose electrons ? (1) Fluorine (2) Lithium (3) Oxygen (4) Zinc

Description : Which one of the following elements exhibits the greatest tendency to lose electrons ? (1) Fluorine (2) Lithium (3) Oxygen (4) Zinc

Last Answer : Lithium

Alpha particle is the nucleus of an atom of (1) Lithium (2) Hydrogen (3) Helium (4) Oxygen

Description : Alpha particle is the nucleus of an atom of (1) Lithium (2) Hydrogen (3) Helium (4) Oxygen

Last Answer : Helium

Can you find the smallest radius sphere that has points with integer values?

Description : Can you find the smallest radius sphere that has points with integer values?

Last Answer : answer:When you say that there will be 42 points if the x y z are unique, did you mean 48? There are six ways to arrange the numbers and eight combinations of the signs. Besides that, one ... could find a pattern as to which radii cause multiples of eight, we could limit the number of solutions.

What is the element in period 4 with the smallest atomic radius?

Description : What is the element in period 4 with the smallest atomic radius?

Last Answer : What is the noble gas element with the largest radius

What element has the smallest covalent radius?

Description : What element has the smallest covalent radius?

Last Answer : Helium has the smallest covalent radius

From the elements: Cl, Br, F, O, Al, C, Li, Cs and Xe; choose the following: (a) The element with highest negative electron gain enthalpy. (b) The element with lowest ionization enthalpy. (c) The element with smallest ionic radius. (d) The element with six electrons in the valence shell. (e) The element which is a liquid at room temperature. (f)The element which belongs to zero group. (g) The elements which forms largest number of compounds.

Description : From the elements: Cl, Br, F, O, Al, C, Li, Cs and Xe; choose the following: (a) The element with highest negative electron gain enthalpy. (b) The element with lowest ionization enthalpy. ( ... . (f)The element which belongs to zero group. (g) The elements which forms largest number of compounds.

Last Answer : Ans. (a). The element chlorine (Cl) has the highest negative electron gain enthalpy. (b). The element cesium (Cs) has lowest ionization enthalpy. (c). The element fluorine F has lowest atomic radius. (d ... zero group (or group 18). (g). The element carbon (C) forms the largest number of compounds.

Which of the following has the smallest atomic radius? w) iodine x) chlorine y) fluorine z) bromine

Description : Which of the following has the smallest atomic radius? w) iodine x) chlorine y) fluorine z) bromine

Last Answer : ANSWER: Y -- FLUORINE

What is the name of the compound formed when potassium nitrogen and oxygen are combined?

Description : What is the name of the compound formed when potassium nitrogen and oxygen are combined?

Last Answer : The chemical formula of potassium nitrate is KNO3.

The elements known as primary nutrients for plants (1) Nitrogen, Phosphorus and Potassium (2) Nitrogen, Oxygen and Silicon (3) Potassium, Boron and Nitrogen (4) Nitrogen, Phosphorus and Iron

Description : The elements known as primary nutrients for plants (1) Nitrogen, Phosphorus and Potassium (2) Nitrogen, Oxygen and Silicon (3) Potassium, Boron and Nitrogen (4) Nitrogen, Phosphorus and Iron

Last Answer : (1) Nitrogen, Phosphorus and Potassium Explanation: Nitrogen (N), Phosphorus (P) and Potassium (K) are considered as the three essential or primary nutrients for plants. Together they make up ... need small quantities of iron, manganese, zinc, copper, boron and molybdenum, known as trace elements

Non-metallic character increases from (1) Magnesium to Barium (2) Potassium to Cesium (3) Oxygen to Selenium (4) Sodium to Chlorine

Description : Non-metallic character increases from (1) Magnesium to Barium (2) Potassium to Cesium (3) Oxygen to Selenium (4) Sodium to Chlorine

Last Answer : (4) Sodium to Chlorine Explanation: The elements which lose electrons to form cations are known as metals. Metallic character decreases across a period as we move from left to right.

To test chemical oxygen demand (C.O.D.) of sewage, organic matter is oxidised by potassium dichromate in the presence of A. Hydrochloric acid B. Sulphuric acid C. Nitric acid D. Citric acid

Description : To test chemical oxygen demand (C.O.D.) of sewage, organic matter is oxidised by potassium dichromate in the presence of A. Hydrochloric acid B. Sulphuric acid C. Nitric acid D. Citric acid

Last Answer : ANS: B

Cells are composed of A A. Carbon, hydrogen, nitrogen and oxygen B. Sodium, potassium, calcium and hydrogen C. Hydrogen, carbon, sodium, and potassium D. Nitrogen, oxygen, calcium and carbon

Description : Cells are composed of  A A. Carbon, hydrogen, nitrogen and oxygen B. Sodium, potassium, calcium and hydrogen C. Hydrogen, carbon, sodium, and potassium D. Nitrogen, oxygen, calcium and carbon

Last Answer : Carbon, hydrogen, nitrogen and oxygen

Cells are composed of A A. Carbon, hydrogen, nitrogen and oxygen B. Sodium, potassium, calcium and hydrogen C. Hydrogen, carbon, sodium, and potassium D. Nitrogen, oxygen, calcium and carbon

Description : Cells are composed of  A A. Carbon, hydrogen, nitrogen and oxygen B. Sodium, potassium, calcium and hydrogen C. Hydrogen, carbon, sodium, and potassium D. Nitrogen, oxygen, calcium and carbon

Last Answer : Carbon, hydrogen, nitrogen and oxygen

The oxygen evolved during photosynthesis, comes from water molecules. Which one of the following pairs of elements is involved in this reaction?(a) Magnesium and Molybdenum (b) Magnesium and Chlorine (c) Manganese and Chlorine (d) Manganese and Potassium

Description : The oxygen evolved during photosynthesis, comes from water molecules. Which one of the following pairs of elements is involved in this reaction? (a) Magnesium and Molybdenum (b) Magnesium and Chlorine (c) Manganese and Chlorine (d) Manganese and Potassium

Last Answer : (c) Manganese and Chlorine

In flue gas analysis by Orsat's apparatus, oxygen is absorbed by (A) Potassium hydroxide (B) Cuprous chloride (C) Alkaline pyrogallol solution

Description : In flue gas analysis by Orsat's apparatus, oxygen is absorbed by (A) Potassium hydroxide (B) Cuprous chloride (C) Alkaline pyrogallol solution

Last Answer : (C) Alkaline pyrogallol solution

Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of __________ present in it. (A) Coal ash (B) Potassium cyanide (C) Ortho-xylene (D) None of these

Description : Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of __________ present in it. (A) Coal ash (B) Potassium cyanide (C) Ortho-xylene (D) None of these

Last Answer : (B) Potassium cyanide

Pick out the correct statement. (A) Chemical oxygen demand (COD) is a measure of chemically oxidisable organic matter present in water (B) COD is determined by oxidising the organic matter present in water with potassium dichromate in cone, sulphuric acid solution at boiling temperature for specified time (C) COD is related to BOD of a given waste in water but the relationship varies for different wastes. Typically COD of potable water may be 1-2 mg/litre (D) All (A), (B) and (C)

Description : Pick out the correct statement. (A) Chemical oxygen demand (COD) is a measure of chemically oxidisable organic matter present in water (B) COD is determined by oxidising the organic matter present in water with potassium dichromate ... of potable water may be 1-2 mg/litre (D) All (A), (B) and (C)

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

The residual product discharged by the hydrogen-oxygen cell is ____________ a) Hydrogen peroxide b) Alcohol c) Water d) Potassium permanganate

Description : The residual product discharged by the hydrogen-oxygen cell is ____________ a) Hydrogen peroxide b) Alcohol c) Water d) Potassium permanganate

Last Answer : c) Water

Oxygen has a valence number of -1 in: w) Sodium Peroxide x) Potassium Chlorate y) Water z) Sodium Hydroxide

Description : Oxygen has a valence number of -1 in: w) Sodium Peroxide x) Potassium Chlorate y) Water z) Sodium Hydroxide

Last Answer : ANSWER: W -- SODIUM PEROXIDE

The elements known as primary nutrients for plants (1) Nitrogen, Phosphorus and Potassium (2) Nitrogen, Oxygen and Silicon (3) Potassium, Boron and Nitrogen (4) Nitrogen, Phosphorus and Iron

Description : The elements known as primary nutrients for plants (1) Nitrogen, Phosphorus and Potassium (2) Nitrogen, Oxygen and Silicon (3) Potassium, Boron and Nitrogen (4) Nitrogen, Phosphorus and Iron

Last Answer : Nitrogen, Phosphorus and Potassium

Which of the following is not a method of preparing oxygen? (1) Electrolysis of water (2) Fractional distillation of liquid air (3) Decomposition of potassium permanganate (4) Decomposition of manganese dioxide

Description : Which of the following is not a method of preparing oxygen? (1) Electrolysis of water (2) Fractional distillation of liquid air (3) Decomposition of potassium permanganate (4) Decomposition of manganese dioxide

Last Answer : Decomposition of manganese dioxide

Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen? (a) Pseudomonas (b) Mycoplasma (c) Nostoc (d) Bacillus

Description : Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen? (a) Pseudomonas (b) Mycoplasma (c) Nostoc (d) Bacillus

Last Answer : (b) Mycoplasma

Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen ? (1) Pseudomonas (2) Mycoplasma (3) Nostoc (4) Bacillus

Description : Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen ? (1) Pseudomonas (2) Mycoplasma (3) Nostoc (4) Bacillus

Last Answer : (2) Mycoplasma