Referring only to a periodic table, give the ionic charge expected for each of these representative elements. (Type your answ (a) Be (b) Kr (c) Li (d) P. (е) Te (f) CI (g) C (h) Ba Need Help? Read It
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Q: Today I submitted this question and was given and answer but I cannot figure out where the 8 O came…
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Q: may I ask why it's not mgsinteta??
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- (a) Using the periodic table provided, write down the shorthand electron notation for the following three elements and indicate whether they are active, inactive or intermediate: Scandium (Sc): Argon (Ar); Aluminium (Al) (b) Metals are conductors of electricity whereas insulators such as ceramic materials are not. Using the honding theory, show and explain why metals are conductors and ceramics are insulators. (c) Aluminium is a good conductor of electricity. A 100 m aluminium wire of diameter 2.25 mm is to be used in domestic electrical wiring. If a voltage of 250V and a current of 13 amps are needed, answer the following i. What is the conductivity of the aluminium wire? ii. Give two reasons why aluminium wire is not used in domestic wiring in Zambia? ii. Give three applications of pure aluminium.Today I submitted this question and was given and answer but I cannot figure out where the 8 O came from in the solution without looking up how much oxygen weighs. Can you explain to me how this is solved with only the information in the question - If 112 g of silicon (Si) react completely with 64 g of oxygen (O) to form silica (SiO2), what is the atomic weight of silicon? I am supposed to solve it not using a periodic table and am very confused as to how to get to the answer in the book, 28.Do u know what is kg atom-1 in the equation? how did they convert kg mol-1 to kg atom-1?
- can i get a simple sulotion and answer for this question in the pic thank youA high-leaded brass that has a composition of 65.5 wt% Cu, 32.0 wt% Zn, and 2.5 wt% Pb with density equal to 8.94 g/cm^3, 7.13 g/cm^3, and 11.^35 g/cm3, respectively. Determine its approximate density Write up to 3 decimal places. Determine the atom percent (%) of lead. Atomic weights: Cu-63.55 g/mol ;Zn-65.41 g/mol ; Pb-207.2 g/mol Write up to 3 decimal places.pls show all steps 1) Assume that the elemental atoms are hard spheres of radius r.Calculate the maximum packing rate t obtained when this elementcrystallizes into the following structures:(a) simple cubic (sc)(b) body-centered cubic (bcc)(c) face-centered cubic (fcc)
- -Using the following ionic radii, calculate the void volume fraction in the CsCl.I need help with the third part of the question. (c) identity of the ion, assuming it's an element (Use only the masses of elements in their most common form as listed on the periodic table of elements.)How do the elements exhibit a range of band gaps?
- Explain the process by which an energy dispersive X-ray spectrum (EDX) spectrum is generated and the origins of the La and Ka lines for Fe in the EDX shown in Figure 3 below. Why do the Fe La lines have a lower energy than the Ka lines? By considering the energy of the X-rays measured, discuss whether EDX can be used to measure whether the iron in an iron oxide is in 2+ or 3+ valence state? Which other spectroscopy technique in the transmission electron microscope (TEM) is more appropriate and why? OK 0.01 10.00 kev Figure 3: EDX spectrum of multi-element glass (NIST K309) containing 0, Al, Si, Ca, Ba and Fe.Given: Molybdenum has a BCC crystal structure, an atomic radius of 0.1363 nm, and an atomic weight of 95.64 g/mol. Required: Calculate the theoretical density of molybdenum. Compare your calculated density to the experimentally measured density of 10.22 g/cm3.A sample of silicon is uniformly 8 points doped with (10^16) arsenic atoms per cm-3 and 5x(10^15) boron atoms per cm-3. Using this information and assuming ni is (10^10) cm-3. at 300K determine the following items for this sample: a- The type (n or p).b- The majority carriers concentration.c- The minority carriers concentration. O n-type ; 5*(10^15) cm-3; 10000 cm-3 p-type ; 5*(10^15) cm-3; 10000 cm-3 n-type ; 10000 cm-3; 5*(10^15) cm-3 pure-type ; 10000 cm-3; 5*(10^15) cm-3 O Other: