Concept explainers
(a)
Interpretation:
The laws of definite proportions and multiple proportions to be illustrated with examples.
Concept Introduction:
Covalent bonding: A covalent bond is formed by sharing of electrons (equally or partially polarized) between the two non-metals.
Octet rule: By obtaining eight electrons around the valence shell of an element, then compound satisfied the octet rule and thus, achieved the electron configuration of noble gas.
(b)
Interpretation:
The laws of definite proportions and multiple proportions to be illustrated with examples.
Concept Introduction:
Covalent bonding: A covalent bond is formed by sharing of electrons (equally or partially polarized) between the two non-metals.
Octet rule: By obtaining eight electrons around the valence shell of an element, then compound satisfied the octet rule and thus, achieved the electron configuration of noble gas.
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CHEMISTRY: ATOMS FIRST VOL 1 W/CONNECT
- Name the following compounds: CsCl BaO K2S BeCl2 HBr AlF3 AlF3arrow_forwardGive the complete symbol (XZA), including atomic number and mass number, of (a) a nickel atom with 31 neutrons, and (b) a tungsten atom with 110 neutrons.arrow_forwardCobalt has three radioactive isotopes used in medical studies. Atoms of these isotopes have 30, 31, and 33 neutrons, respectively. Give the complete symbol for each of these isotopes.arrow_forward
- The following isotopes have applications in medicine. Write their symbols in the form XZA. a. cobalt-60 b. phosphorus-32 c. iodine-131 d. sulfur-35arrow_forwardClick on the site (http://openstaxcollege.org/l/16PhetAtomMass) and select the Mix Isotopes tab, hide the Percent Composition and Average Atomic Mass boxes, and then select the element boron. Write the symbols of the isotopes of boron that are shown as naturally occurring in significant amounts. Predict the relative amounts (percentages) of these boron isotopes found in nature. Explain the reasoning behind your choice. Add isotopes to the black box to make a mixture that matches your prediction in (b). You may drag isotopes from their bins or click on More and then move the sliders to the appropriate amounts. Reveal the Percent Composition and Average Atomic Mass boxes. How well does your mixture match with your prediction? If necessary, adjust the isotope amounts to match your prediction. Select Nature’s mix of isotopes and compare it to your prediction. How well does your prediction compare with the naturally occurring mixture? Explain. If necessary, adjust your amounts to make them match Nature’s amounts as closely as possible. 21. Repeat Exercise 2.20 using an element that has three naturally occurring isotopes.arrow_forwardSamples of compound X, Y, and Z are analyzed, with results shown here. Compound Description Mass of Carbon Mass of Hydrogen X clear, colorless, liquid with strong odor 1.776 g 0.148 g Y clear, colorless, liquid with strong odor 1.974 g 0.329 g Z clear, colorless, liquid with strong odor 7.812 g 0.651 g Do these data provide example(s) of the law of definite proportions, the law of multiple proportions, neither, or both? What do these data tell you about compounds X, Y, and Z?arrow_forward
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