State whether the following are metals or non-metals. a. sodium __________________ b. gallium _________________ c. chlorine _________________ d. tin _________________ e. carbon _________________ f. xenon ______________
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State whether the following are metals or non-metals. a. sodium __________________ b. gallium _________________ c. chlorine...
Which of the following pairs of elements are likely to form ionic compounds: A) helium and oxygen B) magnesium and chlorine C) chlorine and bromine D) potassium and sulfur E) sodium and potassium F) nitrogen and oxygen I believe the answer is d and f Would appreciate a verification and as to why I might be wrong or right instead of a link saying what is an ionic compound thank you
Which of the following metals could really be used as sacrificial anodes for iron (Fe2+(aq) + 2e??Fe(s), E0 =-0.44V )? A) Tin F) Magnesium B) Zinc G) Lithium C) Aluminum H) Copper D) Lead I) Nickel E) Sodium J) None of the above Enter all that apply in alphabetical order (e.g. AB, ABDF, etc.)
15. Determine whether the following atoms will form an ionic compound or a molecular compound, and give the formula of the compound. (e) carbon and 2 oxygen (a) sodium and chlorine (b) carbon and 4 hydrogen (e) magnesium and bromine (d) 2 bromine
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,...
Which of the following term symbols correctly represents the
ground electronic state of a chlorine atom (in the absence of
spin-orbit coupling)?
a.
b.
c.
d.
e.
f.
D
Which of the following compounds can show a wide range of nonstoichiometry? a.) xenon difluoride b.)sodium bromide c.)titanium oxide d.)barium chloride e.)calcium carbide f.)aluminum oxide
Write a balanced chemical equation for each of the following reactions: 1. Hydrogen + chlorine hydrogen chloride 2. Hydrogen + nitrogen — ammonia 3. Carbon + steam → carbon monoxide + hydrogen 4. Calcium oxide + water calcium hydroxide 5. Phosphorus + oxygen → diphosphorus pentoxide 6. Aluminum sulfate + calcium hydroxide → aluminum hydroxide + calcium sulfate 7. Aluminum + oxygen aluminum oxide 8. Sodium peroxide + water sodium hydroxide + oxygen 9. Copper + concentrated sulfuric acid →...
6) Refer to the following information for parts a-e: Solid sodium metal reacts with chlorine gas to produce solid sodium chloride in a spontaneous exothermic reaction. a Write and balance the equation for the reaction. b. For the above reaction, identify: i The oxidation state of each atom in the reactants and products: j. The species that is oxidized: k. The species that is reduced: 1. The oxidizing agent: m. The reducing agent: c. At a temperature of 30 °C...
1. Which four lamps can you observe using a spectroscope? A. strontium B. sodium C. lithium D. fluorescent E. tungsten F. mercury G. barium 2. Which four metals are you able to observe the emission colours using flame excitation? A. tungsten B. fluorescent C. strontium D. sodium E. barium F. mercury G. lithium
1. Metals _________ A. tend to be shiny solids and are good conductors of heat. B. share properties of metals and nonmetals. C. are often gases or brittle solids and are poor conductors of heat. D. are poor conductors of electricity. E. All of the above. 2. The most abundant element in the Earth’s hydrosphere is _____. a. iron b. oxygen c. nitrogen d. carbon e. silicon 3. In the compound NaCl, the sodium atom donates ____ electron(s) to the...