Description : (a) Show on a diagram the transfer of electrons between the atoms in the formation of MgO. Write symbols of cation and anion present in MgO. (b) Name the solvent in which ionic compounds are generally soluble. (c) Why are aqueous solutions of ionic compounds able to conduct electricity? -Chemistry
Last Answer : (b) Ionic compounds are soluble in water. (c) It is because aqueous solutions consist of ions which can move freely in them and carry current.
Description : The element absorbed both in cation and anion form is – (1) Sulphur (2) Nitrogen (3) Calcium (4) Phosphorus
Last Answer : (2) Nitrogen Explanation: Nitrogen, required in large quantities for healthy plant growth, is supplied either as a cation (ammonium) or an anion (nitrate). The ratio of these two forms of nitrogen in the nutrient solution can have large effects on both the rate and direction of pH changes with time.
Description : In the addition of hydrogen bromide to alkynes, which of the following species is believed to be an intermediate? (a) vinyl anion (b) vinyl cation (c) vinyl radical (d) carbene
Last Answer : vinyl cation
Description : The element absorbed both in cation and anion form is (1) Sulphur (2) Nitrogen (3) Calcium (4) Phosphorus
Last Answer : Nitrogen
Description : What is the difference between a cation and an anion?
Last Answer : A cation is a positively charged ion, while an anion is a negatively charged ion.
Last Answer : A: A cation is a positively charged ion, while an anion is a negatively charged ion.
Description : What is the difference between cation and anion? -Chemistry 9th
Last Answer : Cations and anions introduction: Ions which are a part of the science subject Chemistry forms from atoms and electrons that have either gained or lost their weight by the removal or adding of one or more ... of electrons is more than the number of protons in an anion. thank you hope this helps u
Description : A cation and an anion slowly move towards each other. What happens to the strength of the electrostatic force between them?
Last Answer : The Strength is increased and and Ionic bond is formed.An Ionic bonds involve a cation and an anion. The bond is formed when an atom, typically a metal, loses an electron or electrons, and ... it. The ions produced are oppositely charged and are attracted to one another due to electrostatic forces.
Description : Is gallium a cation or anion?
Last Answer : Gallium is a metallic element. It forms cations Ga3+ and Ga+
Description : Is boron a cation or a anion?
Last Answer : Boron is an element and is neither an anion or cation. Ifionized it would tend to from B3+ and would be thus a cation.
Description : What is beryllium cation or anion?
Last Answer : Beryllium cation is Be(2+).
Description : Is calcium an cation or anion?
Last Answer : Calcium has the cation Ca(2+).
Description : At a pH below the isoelectric point, an amino acid exists as (A) Cation (B) Anion (C) Zwitterion (D) Undissociated molecule
Last Answer : Answer : A
Description : At isoelectric pH, an amino acid exists as (A) Anion (B) Cation (C) Zwitterion (D) None of these
Last Answer : Answer : C
Description : Polyvinyl alcohol is used as a (A) Cation/anion exchanger (B) Water soluble adhesive (C) Textile fibre (D) Non-sticky coating on frying pans
Last Answer : (B) Water soluble adhesive
Description : Permanent hardness of water can be removed by (A) Simply boiling (B) Adding alum (C) Passing it through cation & anion exchangers (D) All (A), (B) and (C)
Last Answer : (C) Passing it through cation & anion exchangers
Description : Which of the following electrolytes is a major anion in body fluid? a) Chloride Chloride is a major anion found in extracellular fluid. b) Potassium Potassium is a cation. c) Sodium Sodium is a cation. d) Calcium Calcium is a cation.
Last Answer : a) Chloride Chloride is a major anion found in extracellular fluid.
Description : Which of the following electrolytes is a major cation in body fluid? a) Potassium Potassium is a major cation that affects cardiac muscle functioning. b) Chloride Chloride is an anion. c) Bicarbonate Bicarbonate is an anion. d) Phosphate Phosphate is an anion.
Last Answer : a) Potassium Potassium is a major cation that affects cardiac muscle functioning.
Description : In solid-state optical detectors, the excited charge is transported in the solid by ∙ a. Holes and protons ∙ b. Holes and electrons ∙ c. Anion and cation ∙ d. Protons and photons
Last Answer : ∙ b. Holes and electrons
Description : While conducting Luminol test, luminol reacts with hydrogen salt and forms: (a) Di-anion (b) Cation (c) Anion (d) All of the above
Last Answer : Ans: (a). Di-anion
Description : Which of the following is true about the cycloheptatrienyl free radical ?
Last Answer : Which of the following is true about the cycloheptatrienyl free radical ? A. it is an isolated stable ... `4n+2pi` electrons D. none of the above.
Description : What is anion ?
Last Answer : When an atom receives one or more electrons, it is negatively charged. This is called anion.
Description : Which of the following statements describes the first step in the mechanism of the aldol condensation? (a) An alpha hydrogen is abstracted by the base to form an enolate anion. (b) A nucleophilic base attacks ... by the base ion. (d) The alpha hydrogen is abstracted by an acid to the enolate anion.
Last Answer : An alpha hydrogen is abstracted by the base to form an enolate anion
Description : The lone-pair electrons of the methyl anion occupy a __________ orbital. (a) s (b) sp (c) sp2 (d) sp3
Last Answer : sp3
Description : Which of the following is strongly non-basic anion? a. Se2- b. Clc. Brd. F -
Last Answer : a. Se2-
Description : What is cation ?
Last Answer : Cation is one of the major properties of carbon atoms. Due to this religion, carbon atoms join together one after the other to form innumerable organic compounds like simple chains , branch chains , closed chains , chained rings etc.
Description : What is carbon cation ?
Last Answer : Cation is the process by which atoms of an element combine to form ellipses of different shapes and sizes. The Latin catena means chain. A special example of catenation is fullerene. The molecular mass of a long chain ( C60) organic compound called fullerene. Atoms are hybrid in this structure.
Last Answer : The religion of forming chains of different lengths by creating bonds between atoms of the same element is called catenation.
Last Answer : Atoms with charge are called ions. A positively charged ion is called a cation.
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 .
Description : (a) If the radius of the Br ion is 0.182 nm, how large a cation can fit in each of the tetrahedral hole. (b) AgI crystallizes in a cubic closed packed ZnS structure. What fraction of tetrahedral site ... Ag ion ? (c) At what temp. range, most of the metals becomes super conductors ?
Last Answer : (a) For a tetrahedron the limiting ratio is 0.225 – 0.414 For largest cation highest value 0.414 would be considered. r + / r– = 0.414 r + = 0.414 × 0.182 = 0.075 nm. (b) In FCC there are 8 tetrahedral voids. Out of this ½ is occupied by Ag cation. (c) 2 k – 5 k.
Description : Why cation present below in electrochemical series can discharge before the elements present above them in an electrochemical cell?
Last Answer : Ans: This is because their ability to be reduced (reduction potential) is more than the cation present above them in electrochemical series. So they take electrons before the other cations and get discharged.
Description : Which of the following is strongly-acidic cation? a.Ba2+ b. Ca2+ c.Ti4+ d. Na+
Last Answer : c.Ti4+
Description : Which of the following is an example of a "cation": w) ammonium x) chloride y) sulfate z) oxalate
Last Answer : ANSWER: W -- AMMONIUM
Description : What are anti-aromatic compounds ?
Last Answer : Answer : A compound is called an anti-aromatic compound if the molecule of a compound has 4 সং electrons ( where n = 1, 2, 3 ...... etc) and a sphere of continuous p ... present in the molecule present in the molecule behave as anti-aromatic compounds. Such as cyclobutine , cyclopropinyl anion.
Description : What is the difference between aliphatic compounds and aromatic compounds ?
Last Answer : aliphatic compounds 1. Aliphatic compounds are mainly free-chain. 2. Aliphatic compounds can be saturated or unsaturated. 3. Aliphatic compounds have low carbon content. 4. Replacement reactions ... compounds. 5. Aromatic halides are relatively less active. . Aromatic hydroxy compounds are acidic.
Description : What is Aromatic Hydrocarbon ?
Last Answer : Hydrocarbons with benzene and benzene rings are called aromatic hydrocarbons. Such as: benzene , phenol.
Last Answer : a few Special Featured To the compound Aromatic Compounds Says. Such as : benzene , phenol , naphthalene Compounds.
Description : ‘Freon' used as refrigerants is chemically known as - (1) chlorinated hydrocarbon (2) fluorinated hydrocarbon (3) chlorofluoro hydrocarbon (4) fluorinated aromatic compound
Last Answer : (3) chlorofluoro hydrocarbon Explanation: In addition to fluorine and carbon, Freons often contain hydrogen, chlorine, or bromine. Thus, Freons are types of chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), and related compounds.
Description : Wax used for making candle is chemically a mixture of – (1) aliphatic hydrocarbons (2) aromatic hydrocarbons (3) cyclic hydrocarbons (4) aliphatic and aromatic hydrocarbons
Last Answer : (1) aliphatic hydrocarbons Explanation: An aliphatic compound is a hydrocarbon compound containing carbon and hydrogen joined together in straight chains, branched trains or non-aromatic rings ... naturally occurring. Waxes are organic compounds that characteristically consist of long alkyl chains.
Description : Define Aromatic Compounds.
Last Answer : Ans: The Compounds which gives pleasant smell.
Description : What are the necessary conditions for any system to be aromatic?
Last Answer : Ans. A compound is said to be aromatic if it satisfies the following three conditions: (i) It should have a planar structure. (ii) The π-electrons of the compound are completely delocalized in the ring. (iii)The total number ... to (4n + 2), where n = 0, 1, 2 etc. This is known as Huckel s rule.
Description : Which antibiotic contains NO2 group attached to aromatic nucleus in its structure ?
Last Answer : Ans. Chloramphenicol.
Description : Aromatic primary amines are not prepared by gabrial phthalimide synthesis. Why?
Last Answer : Ans:- Because aryl halides donot undergo nucleophilic substitution reaction.
Description : Which of the following heterocyclic compounds is not aromatic? (a) Pyridine (b) Pyrrole (c) Furan (d) Piperidine
Last Answer : Piperidine
Description : Which of the following statements is NOT correct : (a) Tollens' test is given by both aliphatic and aromatic aldehydes. (b) Fehling's test is given by aliphatic aldehydes. It is not given ... given by methyl ketones and acetaldehydes. (d) Lucas test is given by both aliphatic and aromatic aldehydes
Last Answer : Lucas test is given by both aliphatic and aromatic aldehydes