HomeworkO EEG 3033-Fal 2017 Or. Wilkins Some basic things to bok for as the seme
ID: 2248660 • Letter: H
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HomeworkO EEG 3033-Fal 2017 Or. Wilkins Some basic things to bok for as the semester goes Select the best answer, or fill in the blank, or complete the fellowing as needed 1. Silkon is common rare) on tEarth 2. The element silicon is usually found in nature as SiO, (What is ) 3.The ele mont siloen is in Group+-onthe periodic chart. This means t has 4 valence electrons 4 In a single crystal solid, the atomic erder is (extrersely high, random) 5. A silicon atom in a single crystal of silicon has nearest neighbor silicon atoms Each of these Si atoms forms a- bond between the two Si atoms. tach bond consists - of valence electrons. Thus, for at least part of the time, each Si atom within the crystal electrons in it outer shell has 6. The atomic density of single crystal silicon is 7. In terms of electrical conductivity, solids can be or semiconductors Sricon is a s when a bond is broken in silicon, a negative conduction positively charged that make up current in S and a charge carriers is generated, thus there are ev. The strength of bonds in 9. Thermal energy at room temgerature is acon is about_ eV. I ev The large difference between thermal energy and atomic bond energy is why Si is a (solid, liquid, gas) at room temperature 10 when a power supply is applied to a semiconductor, u tend to move toward the positive electrodes, and- tend to move toward the negative electrode. The power supply generates an When the power supply is turned off there is (no movement, random movement) of charge carriers in the semiconductor. field in the semiconductor 11. Current is the movement of charge carriers from one position in a solid to another position in the solid 12. Conventional current is defined as the direction in which (positive, negative) charge carriers moveExplanation / Answer
1. Silicon is abundantly found on earth surface. Hence it is not rare but common on earth
2.Silicon is most abundantly found in nature as silica whose formula is SiO and hence answer for x is 1 . Hence X is 1
3.Silicon is in group 14.It has 4 valence electrons
4.By definition, a solid is crystalline if it has long range order. Hence answer is extremely high
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