Category: Inorganic chemistry questions
Write electron configuration of copper
Electron configuration of copper 4s13d10 Please Subscribe to promote this website. Subscription is free Share with a friend Thank you so much Read More
Qualitative analysis of cobalt II salts
Qualitative analysis of cobalt II salts Common salt: Cobalt sulphate: CoSO4 (a)With dilute sodium hydroxide solution of ammonium solution Observation Blue precipitate insoluble in excess ... Read More
State properties of cobalt as a transition element
Properties of cobalt as a transition element a)Forms colored compounds; for instance Co2+ is pink b)Has variable oxidation states; +2, +3, c)Forms complexes, e.g. CoCl42-. ... Read More
Write electron configuration of cobalt
Electron configuration of cobalt 4s3d7 Please Subscribe to promote this website. Subscription is free Share with a friend Thank you so much Read More
Qualitative analysis of chromium (III) salts
Qualitative analysis of chromium (III) salts With sodium hydroxide solution: It forms a green precipitate soluble in excess Cr3+ (aq) + 3OH- (aq) → Cr(OH)3 ... Read More
Advantages of potassium dichromate over potassium permanganate in volumetric analysis
Advantages of potassium dichromate over potassium permanganate in volumetric analysis Hydrochloric acid can be used to acidify titration involving potassium dichromate since are not strong ... Read More
Write equation for the reaction between iron(II) sulphate and potassium dichromate (VI) in acidic medium.
Write equation for the reaction between iron(II) sulphate and potassium dichromate (VI) in acidic medium Cr2O72- (aq) + 14H+ (aq) + 6Fe2+ (aq) → 2Cr3+ ... Read More
Properties of chromium as a transition element
Properties of chromium as a transition element Forms colored compounds; for instance Cr3+ is green Has variable oxidation states; +2, +3, +4, +5, +6. Forms ... Read More
Write electron configuration of chromium.
Write electron configuration of chromium. 4s13d5 Please Subscribe to promote this website. Subscription is free Share with a friend Thank you so much Read More
Similarities in chemical properties of Beryllium (Be) and aluminium (Al).
Similarities in chemical properties of Beryllium (Be) and aluminium (Al). 1. Both are passive to nitric acid. 2. Both react with NaOH solution to evolve ... Read More
State similarities between Li and Mg
State similarities between Li and Mg 1. Both form normal oxides when they burn in oxygen. 4Li (s) + O2 (g) → 2Li2O (s) 2Mg ... Read More
What is diagonal relationship?
What is diagonal relationship? Diagonal relationship is the similarity in chemical properties between elements in the second period with elements which are lying to their ... Read More
Explain the abnormally high boiling point of ammonia (NH3).
Explain the abnormally high boiling point of ammonia (NH3) The boiling point of ammonia is abnormally high because it forms strong intermolecular hydrogen bonds. This ... Read More
Explain why the boiling point of beryllium chloride is 4870C and that of magnesium chloride is 14180C.
Explain, the boiling point of beryllium chloride is 4870C and that of magnesium chloride is 14180 Be2+ has higher charge density than Mg2+ due to ... Read More
Explain why the polarizing power of group (II) elements are much higher than those of group I elements.
Explain why the polarizing power of group (II) elements are much higher than those of group I elements. Group II elements have bigger charge and ... Read More
The elements of group II of the periodic table are harder and have higher melting points than those of group I elements. Explain
The elements of group II of the periodic table are harder and have higher melting points than those of group I elements. Explain Group II ... Read More
Explain why carbon tetrachloride molecules are not polar while carbon trichloride is polar
Explain why carbon tetrachloride molecules are not polar yet the bonds in carbon trichloride are polar. CCl4 is a symmetrical molecule, the dipole moments in ... Read More
(d) Explain why the transition metals of period 4 tend to have higher melting points than non-transition metals of the same period.
Explain why the transition metals of period 4 tend to have higher melting points than non-transition metals of the same period. Transition elements have higher ... Read More
Explain the variation of melting point of group VII elements
Explain the variation of melting point of group VII elements The melting points of the elements of group VII increases down the group due to ... Read More
State factors that affect melting points of nonmetals
State factors that affect melting points of nonmetals size of the molecules/molecular mass shape of the molecules polarity of the molecules Please Subscribe to promote ... Read More
State the factors which affect the melting points of metals.
State the factors which affect the melting points of metals Number of electrons its atoms contribute to form metallic bond, higher the number of electrons ... Read More
Explain what is meant by the term melting point.
Explain what is meant by the term melting point. It is a temperature at which a liquid is in equilibrium with a solid at a ... Read More
Pajan’s rules of covalency
Pajan’s rules of covalency These are conditions that when possessed by cations and anions of a given molecule, make the ionic bond partially or fully ... Read More
What is polarization of an ion?
What is polarization of an ion? Polarization is the attraction of electrons from anion by a cation in an ionic compound to form a partial ... Read More
State factors that promote formation of ionic bonds
State factors that promote formation of ionic bonds Electronegativity or electropositivity differences between two elements must be high. Please Subscribe to promote this website. ... Read More
State characteristics/properties of ionic compounds
State characteristics/properties of ionic compounds They consist of ions and not molecules. They are electrolytes, i.e., when dissolved in water or when fused, conduct an ... Read More
Explain factors that affect the strength of ionic bond
Explain factors that affect the strength of ionic bond Size of the cation and anion; ionic bonds are stronger when the size of the cation ... Read More
What is ionic bond?
What is ionic bond? It is the electrostatic attraction between the opposite charges on ions Please Subscribe to promote this website. Subscription is free Share ... Read More
What is a chemical bond?
What is a chemical bond? A chemical bond is a force of attraction that keeps atoms, ions or molecules together in chemical compounds or solid. Please Subscribe to ... Read More
Explain how the spectra of a hydrogen atom provide evidence for existence of energy levels in atoms.
Explain how the spectra of a hydrogen atom provide evidence for existence of energy levels in atoms. The fact that the hydrogen spectrum is a ... Read More
Explain how the spectra of a hydrogen atom are formed.
Explain how the spectra of a hydrogen atom are formed. When a hydrogen atom in ground state is struck by light, its electron absorbs energy ... Read More
Describe the spectra of a hydrogen atom. Use a diagrams to illustrate your answer.
Describe the spectra of a hydrogen atom. Use a diagrams to illustrate your answer. Hydrogen produces both absorption and emission spectrum Absorption spectra It is ... Read More
What are the applications of atomic spectra?
What are the applications of atomic spectra? Identification of elements in salts by flame test Street advertisement light fireworks Please Subscribe to promote this website. ... Read More
What is excitation of an electron?
What is excitation of an electron? excitation of an electron occurs when an electron in a given energy level gains extra energy and jumps energy ... Read More
What are isotopes?
What are isotopes? Isotopes are atoms of the same element with same number of protons but different number of neutrons. Please Subscribe to promote ... Read More
What is atomic number of an atom?
What is atomic number of an atom? Atomic number is the number of protons in a nucleus of an atom. All atoms of the same ... Read More
Describe the structure of an atom.
Describe the structure of an atom The atom is composed of three basic subatomic particles, namely the electron, the proton and the neutron; the characteristics ... Read More
What is an atom?
What is an atom? An atom is the smallest electrically neutral particle of an element that can take part in a chemical reaction. Please ... Read More
What is an element in chemistry
What is an element? This is a substance that cannot be split into simpler substances. It is composed of discrete particles called atoms. Please ... Read More