Transition elements from the right side of the periodic table are generally foun
ID: 534226 • Letter: T
Question
Transition elements from the right side of the periodic table are generally found as A) sulfides because they tend to give up bonding electrons and form crystals with high lattice energies with sulfur. B) sulfides because their electronegativities favor formation of covalent bonds with the polarizable sulfide anion. C) oxides because they tend to give up bonding electrons and form crystals with high lattice energies with oxygen. D) oxides because oxygen, with its high electronegativity, forms strong covalent bonds with them. E) none of the above The process in which a gaseous substance is converted into a condensed, more usable chemical substance is called A) differentiation. B) liquefaction. C) fixation. D) deposition. E) remediation. The main end use of sulfuric acid is A) manufacture of iron and steel. B) processing of petroleum. C) production of fertilizers. D) production of explosives. E) production of various other chemicals. The most common oxidation state for ions of the transition elements is A) +2, B) +3. C) +4. D) +5. E) +6. Which of the following will be paramagnetic? A) V^5+ B) Ni^2+ C) Mn^7+ D) Ti^4+ E) Zn Chromium and manganese are among the transition elements that form several different oxides. Which of the following statements characterize these oxides? A) As the oxidation number on the metal increases, the valence-state electronegativity increases and the oxides change from acidic to basic. B) As the oxidation number on the metal increases, the valence-state electronegativity increases and the oxides change from basic to acidic. C) As the oxidation number on the metal increases, the valence-state electronegativity decreases and the oxides change from acidic to basic. D) As the oxidation number on the metal increases, the valence-state electronegativity decreases and the oxides change from basic to acidic. E) None of the above statements is correct. Which one of the following normally acts as a bidentate ligand in complexes with transition metal ions? A) CN^- B) EDTA^+ C) SCN^- D) ethylene diamine E) ethylene, C_2H_4 A characteristic of ligands is that A) they are Lewis acids. B) they are Lewis bases. C) they are ions. D) they are electron pair acceptors. E) they are Bronsted-Lowry acids.Explanation / Answer
1. Ans. B
Transition metals forms the right side of the periodic table are generally found as sulphides beacause their electronegativity favor formation of covalent bond with the polarisable sulfide anion.
2. Ans. B
The process in which a gaseous substance is converted in to a condensed more unstable chemical substance is called liquefaction.
3. Ans. D
The main end use of sulphuric acid is production of explosives.
4. Ans. B
The most common oxidation state for ions of transition elements is +3. Although transition elements show variable oxidation states. However +3 oxidation state is common for all the elements.
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