Chapter 2: Q63AE (page 46)
Label the type of bonding for each of the following.
The bond shows in the diagram a represents Ionic bond and b is covalent bond.
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Q.2. Which of the following is true about an individual atom?
a. An individual atom should be considered a solid.
b. An individual atom should be considered a liquid.
c. An individual atom should be considered a gas.
d. The state of the atom depends on which element it is.
e. An individual atom cannot be considered a solid, liquid, or gas.
Justify your choice, and for those you did not choose, explain why they are incorrect.
Q.29 :A chemist in a galaxy far, far away performed the Millikan oil drop experiment and got thefollowing results for the charge on various drops. What is the charge of the electron in zirkombs?
2.56 x 10-12 zirkombs 7.68 x 10-12 zirkombs
3.84x 10-12 zirkombs 6.43 x 10-13 zirkombs
One of the best indications of a useful theory is that it raises more questions for furtherexperimentation than it originally answered. Is this true of Dalton's atomic theory? Giveexamples.
Classify the following elements as metals or non-metals.
Mg Si Rn
Ti Ge Eu
Au B Am
Bi At Br
b. The distinction between metals and non-metals is really not a clear one. Some elements, called metalloids, are intermediate in their properties. Which of these elements would you reclassify as metalloids? What other elements in the periodic table would you expect to be metalloids?
Q.28. A chemistry instructor makes the following claim: "Consider that if the nucleus were the size of a grape, the electrons would be about 1 mile away on average." Is this claim reasonably accurate? Provide mathematical support.
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