9) 9) Which of the following correctly rpresents the electron affinity of bromin

Question

9) 9) Which of the following correctly rpresents the electron affinity of bromine? B)Br(x) -* Br+(g) + e C) Br2 (g) + Br(g) E) Br2(g) + 2e 2Br(g) 10) Which of the following correctly represents the electron affinity of phosphorus? B) P (g) P+ (g) + e. at is th 10) on(g) 4P(g) + 4e. 11) The reaction of a metal with a nonmetal produces a(n) A) acid B) base C) hydroxide D) salt E) oxide 1) 12) Which of the following does not have eight valence electrons? A) Rb+ B) Xe C) Ca D) Br E) All of the above have eight valence electrons. 12) 13) Of the molecules below, the bond in, is the most polar. 13) 14) Which of the following has the bonds correctly arranged in order of increasing polarity? 14) A)0 F. Be F. Mg F. NLF B) Mg F, Be F, NCF, OF C)NCF, Be F, Mg F, OCF E) Be F, Mg F, NCF, OCF 15) The oxidation number of iron in Fe203 is 15), A)1 B)+3 C)-3 D)+2 E)-2 16) 16) Of the bonds C-C, C, and CEC, the C-C bond is A) intermediate in both strength and length B) strongest/shortest C) weakest/longest D) weakest/shortest E) strongest/longest 17) Based on the octet rule, phosphorus most likely forms a ion.17) A) P+ B) P5+ C)P5- D) p3- E) p3+ 18)-- 18) The electron configuration of the S2-ion is

Explanation / Answer

(9)

The correct equation for electron affinity of bromine is:

Br(g) + e- ---> Br-(g)

(10)

The correct equation for electron affinity of phosphorous is:

P(g) + e- ---> P-(g)

(11)

A non metal reacts with a metal to form a salt.

(12)

Ca+ does not have eight valence electrons, because Ca2+ has eight valence electrons.

Hope this helps !

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