問題詳情
29. The two compounds shown on the right are used to synthesize flame retardant materials and biomaterials. The atomic numbers of the elements W, X, Y and Z are known to be W<X<Y<Z<20，X and Z are in the same group, and the atomic number of Y is three times the
(A) The highest oxidation state of both X and Z is +7.
(B) Both HX and HZ are strong acids in water, and their electron dot structures can be expressed as
number of valence electrons of W.
Which of the following statements is correct?
(A) The highest oxidation state of both X and Z is +7.
(B) Both HX and HZ are strong acids in water, and their electron dot structures can be expressed as
(C) Z, W, and hydrogen form a covalent compound, which is soluble in water.
(D) X and Z form compounds XZ, XZ3, XZ5 and XZ7.
(E) Of these four elements, Y has the largest atomic radius, while X has the
smallest.
參考答案
答案：E
統計：A:0,B:1,C:0,D:0,E:0
難度：計算中