A Lewis is any species capable of ___ an electron pair. a) accepting b) donating

Question

A Lewis is any species capable of ___ an electron pair. a) accepting b) donating c) creating d) neutralizing e) gaining A Lewis acid is ______ a) a proton donor. b) a proton acceptor. c) an electron-pair d) an electron-pair acceptor e) is never viewed also as a Bronsted-Lowry acid. Identify the Lewis base in the following reaction: PH_2(aq) + H^+ (aq) rightarrow PH_4^- (aq) a)PH_4^- b)H^- c)PH_3 d) None of these is a base. e) All of these are bases. Identify the Lewis base in the following reaction: SO_2(z) + H_2O(l) rightarrow H_2SO_2(aq) a)SO_2 b)H_2O c)H_2SO_2 d) None of these is a base. e) All of these are bases. A coordinate covalent bond forms when a chemical species ___ a) donates one electron to another species to form a covalent bond. b) accepts a pair of electrons and becomes an anion. c) accepts one electron from another species to form a covalent bond. d) accepts an electron and becomes an anion. e) donates a pair of electrons to another species to form a to form covalent bond. What is the oxidation state of cobalt in the [Co(NH_3)_4, Cl_2]^- complex ion? a) +1 b) +2 c) +3 d) +4 e) +6 What is the coordination number for copper in the compound K_2[CuCl_4]? a) 6 b) 4 c) 3 d) 2 e) 5 What is the coordination number around the Cr ion in [Co(NH_3)_6][CrF_6]? a) 2 b) 1 c) 6 d) 5 e) 7

Explanation / Answer

Answer:-

1). (b) donating.

2). (a) a proton donor .

3). (c) PH3 , because it accepts the proton and forms PH4+

4). (a) SO2 , it has a pair of electron to donate.

5). (e) donates a pair of electrons to another species to form a covalent bond.

6). (c) +3.

7). (b) 4 because there are four Cl- in the coordination sphere.

8). (c) 6 , because there are 6 F- ions in the coordination sphere of Cr.

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