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Chapter 2: Problem 26

(a) Which two of the following are isotopes of the same element: ${ }_{46}^{106} \mathrm{X},{ }_{46}^{107} \mathrm{X},{ }_{47}^{107} \mathrm{X} ?(\mathbf{b})$ What is the identity of the element whose isotopes you have selected?

Short Answer

Expert verified
The two isotopes of the same element are \( _{46}^{106}\mathrm{X}\) and \( _{46}^{107}\mathrm{X}\). The identity of the element whose isotopes were selected is Palladium (Pd).

Step by step solution

01

In the given exercise, we are given three different atoms: \( _{46}^{106}\mathrm{X}\), \( _{46}^{107}\mathrm{X}\), and \( _{47}^{107}\mathrm{X}\). We need to identify which two of these atoms have the same atomic number. The atomic number is represented by the subscript (number at the bottom left). Remember that isotopes have the same atomic number. Here, we can see that the first two atoms, \( _{46}^{106}\mathrm{X}\) and \( _{46}^{107}\mathrm{X}\), have an atomic number of 46, while the third atom has an atomic number of 47. Thus, the two isotopes of the same element are \( _{46}^{106}\mathrm{X}\) and \( _{46}^{107}\mathrm{X}\). #Step 2: Determine the identity of the element with the given atomic number#

Now that we have identified the isotopes with the same atomic number, we can use a periodic table to determine the identity of the element. Look for the element with the atomic number 46 in the periodic table, which corresponds to the element Palladium (Pd). Therefore, the element whose isotopes we have selected is Palladium. #Final answer#
02

Isotopes of the same element

The two isotopes of the same element are \( _{46}^{106}\mathrm{X}\) and \( _{46}^{107}\mathrm{X}\).
03

Identity of the element

The identity of the element whose isotopes were selected is Palladium (Pd).

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Most popular questions from this chapter

Sodium reacts with oxygen in air to form two compounds: sodium oxide and sodium peroxide. In forming sodium oxide, \(23.0 \mathrm{~g}\) of sodium combines with \(8.0 \mathrm{~g}\) of hydrogen. In forming sodium peroxide, $23.0 \mathrm{~g}\( of sodium combines with \)16.0 \mathrm{~g}$ of oxygen. (a) What are the mass ratios of oxygen in the two compounds? (b) What fundamental law does this experiment demonstrate?

Fill in the blanks in the following table: $$ \begin{array}{l|l|l|l|} \hline \text { Cation } & \text { Anion } & \text { Formula } & \text { Name } \\\ \hline \mathrm{Ni}^{2+} & \mathrm{CH}_{3} \mathrm{COO} & & \text { Sodium carbonate } \\ & & & \\ \mathrm{Ca}^{2+} & \mathrm{F}^{-} & & \\ & & \mathrm{Cu}\left(\mathrm{ClO}_{4}\right)_{2} & \\ & & & \\ & & & \\ \hline \end{array} $$

(a) What is meant by the term isomer? (b) Among the four alkanes, ethane, propane, butane, and pentane, which is capable of existing in isomeric forms?

Determine the molecular and empirical formulas of the following: (a) the organic solvent benzene, which has six carbon atoms and six hydrogen atoms; (b) the compound silicon tetrachloride, which has a silicon atom and four chlorine atoms and is used in the manufacture of computer chips; \((\mathbf{c})\) the reactive substance diborane, which has two boron atoms and six hydrogen atoms; (d) the sugar called glucose, which has six carbon atoms, twelve hydrogen atoms, and six oxygen atoms.

The U.S. Mint produces a dollar coin called the American Silver Eagle that is made of nearly pure silver. This coin has a diameter of \(41 \mathrm{~mm}\) and a thickness of \(2.5 \mathrm{~mm}\). The density and approximate market price of silver are \(10.5 \mathrm{~g} / \mathrm{cm}^{3}\) and \(\$ 0.51\) per gram, respectively. Calculate the value of the silver in the coin, assuming its thickness is uniform.
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