8.2. Which of the following elements are donors and which are accep- tors when they are...
8. Will each of the following elements act as a donor or an acceptor when added to the indicated semiconducting material? Assume that the impurity elements are substitutional. For the compound semiconductors, which substitutional site does the impurity occupy Impurity Al lirl 3 80 Sh Semiconductor Ge Si CdTe AIP GaAs ZnS
Rank the following elements in order of increasing metallic character (from least metallic to most metallic): Ne, K, Mg, Rb, N 2. Which of the following groups of elements all have 7 valence electrons? Select one: Li / Na / K / Rb N / P / As / Sb C / Si / Ge / Sn F / Cl / Br / I B / Al / Ga / In O / S / Se / Te
3) Which pair of elements would you expect to exhibit the greatest similarity in their physical and chemical properties? a) Ca, Srb) Ga Ge c) C,0 d) Cs, Bae) H, Li
Which of the following elements has the smallest value of IE1? a) B b) Al c) Ga d) In
An atom of which of the following elements has the highest electron affinity? Select one: a. Br b. Cl c. Rb d. As e. Se An atom of which of the following elements is not diamagnetic in the ground state? Select one: a. Rn b. Ca c. Pt d. Cd e. All are diamagnetic. The general electron configuration for the outermost electrons of the halogens is Select one: a. ns2np4 b. ns2np5 c. ns2np6 d. ns2np2 e. ns2np3 What...
2) Classify the following elements as non-metals or metalloids a) Ge d) S b) F e) Br c) Si f) As Periodic Relations 97 4) Based on the valence shell shown, identify the elements from the revious problem. b) 4fF5d 6s2 e) 5d'6s2 a) 3d74s2 d) 5f 6d 7s2 c) 5d 6s2 f) 5s2 We were unable to transcribe this imageArrange the following elements in order of decreasing electron affinity 8) b) K, Zn, Ga, Br a) Fr, Pt, Pb,...
1.) Among elements 1–18, which element or elements have the smallest effective nuclear charge if we use the equation Zeff=Z?S to calculate Zeff? H, Li, Na, He, Be, Mg, B, Al, C, Si, N, P, O, S, F, Cl, Ne, Ar 2.) Which element or elements have the largest effective nuclear charge? H, Li, Na, He, Be, Mg, B, Al, C, Si, N, P, O, S, F, Cl, Ne, Ar
Which of the following elements most likely has the same number of valence electrons as silicon (Si)? arsenic (As) O sulfur (s) O germanium (Ge) O phosphorus (P)
Which of the following elements has the largest effective nuclear charge, Zeff, for valence electrons of each element. K Ga Ge Br
14. Refer to the periodic table and state the molar mass for each of the following (a) gallium, Ga (b) germanium, Ge (c) antimony, Sb (d) selenium, P