Question : 41.Characterize EACH of the three given statements as being TRUE : 1309586

 

 

41.Characterize EACH of the three given statements as being TRUE or FALSE andthen indicate the collective true-false status of the statements using the choices:

(1) The number of valence electrons possessed by an atom can never exceed four.

(2) Binary ionic compounds containing two nonmetals do not occur.

(3) The name of the ionic compound Cu2S is copper(II) sulfide.

a.All three statements are true.

b.Two of the three statements are true.

c.Only one of the statements is true.

d.None of the statements is true.

 

 

 

42.Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:

(1) The ions O2– and S2– are isoelectronic.

(2) The symbol for an atom of X that has lost two electrons is X2–.

(3) In all ionic compounds the total charge of the ions present per formula unit must add up to zero.

a.All three statements are true.

b.Two of the three statements are true.

c.Only one of the statements is true.

d.None of the statements is true.

 

 

 

43.Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:

(1) The octet rule is used to determine the number of valence electrons an atom possesses.

(2) The formula for the compound sodium carbonate contains parenthesis.

(3) Group IIA and VIA elements form ions that carry two units of charge.

a.All three statements are true.

b.Two of the three statements are true.

c.Only one of the statements is true.

d.None of the statements is true.

 

 

 

44.Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:

(1) Calcium sulfide is a compound in which both types of ions present have the same electron configuration, that of the noble gas argon.

(2) The charge on the positive ions present in the compound Al2S3 is +3.

(3) The polyatomic ions ammonium and cyanide do not contain oxygen.

 

a.All three statements are true.

b.Two of the three statements are true.

c.Only one of the statements is true.

d.None of the statements is true.

 

 

 

45.Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:

(1) The most abundant ion in hard water is usually Na+.

(2) Fresh water purified for drinking purposes contains no ions.

(3) Tooth enamel contains both monatomic and polyatomic ions.

a.All three statements are true.

b.Two of the three statements are true.

c.Only one of the statements is true.

d.None of the statements is true.

 

 

 

46.For the electron configuration 1s22s22p63s1, choose the appropriate number of valence electrons present from the response list.

a.1 valence electronc.5 valence electrons

b.3 valence electronsd.7 valence electrons

 

 

 

47.For the electron configuration 1s22s22p63s23p5, choose the appropriate number of valence electrons present from the response list.

a.1 valence electronc.5 valence electrons

b.3 valence electronsd.7 valence electrons

 

 

 

48.For the electron configuration 1s22s22p63s23p64s23d104p3, choose the appropriate number of valence electrons present from the response list.

a.1 valence electronc.5 valence electrons

b.3 valence electronsd.7 valence electrons

 

 

 

49.For a group Group VA element, choose the appropriate number of valence electrons present from the response list.

a.1 valence electronc.5 valence electrons

b.3 valence electronsd.7 valence electrons

 

 

 

50.For an element with the Lewis symbol , choose the appropriate number of valence electrons present from the response list.

a.1 valence electronc.5 valence electrons

b.3 valence electronsd.7 valence electrons

 

 

 

 

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