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Chapter 2: Problem 9

How do the isotopes of Cu-63 and Cu-65 differ from each other? Write nuclear symbols for both.

Short Answer

Expert verified
Answer: The nuclear symbols for the isotopes Cu-63 and Cu-65 are \(latex _{29}^{63}\text{Cu}\) and \(latex _{29}^{65}\text{Cu}\), respectively. Cu-63 has 34 neutrons and Cu-65 has 36 neutrons in their nuclei.

Step by step solution

01

Understand isotopes

Isotopes are atoms of the same element that have the same number of protons but different numbers of neutrons in their nuclei. Since they have the same number of protons, they share the same atomic number, but their mass numbers, which are the sum of their protons and neutrons, differ.
02

Determine atomic number and mass numbers

Copper (Cu) has an atomic number of 29, which means there are 29 protons in its nucleus. For its isotopes, Cu-63 and Cu-65, the mass numbers are given as 63 and 65, respectively.
03

Calculate neutrons in each isotope

To find the number of neutrons in each isotope, we subtract the atomic number (29) from their mass numbers: For Cu-63: Number of neutrons = 63 - 29 = 34 For Cu-65: Number of neutrons = 65 - 29 = 36
04

Write nuclear symbols for both isotopes

To write the nuclear symbols for the isotopes, we use the form "Element symbol - Mass number". However, in a more detailed form, we can represent them as: \(latex _{Z}^{A}\text{X}\), where Z is the atomic number, A is the mass number and X is the element symbol. Cu-63: \(latex _{29}^{63}\text{Cu}\) Cu-65: \(latex _{29}^{65}\text{Cu}\)

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Most popular questions from this chapter

Which statements are true? (a) Neutrons have neither mass nor charge. (b) Isotopes of an element have an identical number of protons. (c) C-14 and N-14 have identical neutron/proton (n/p \(^{+}\) ) ratios. (d) The vertical columns in a periodic table are referred to as "groups." (e) When an atom loses an electron, it becomes positively charged.

Write the formulas of the following ionic compounds. (a) iron(III) carbonate (b) sodium azide \(\left(\mathrm{N}_{3}-\right)\) (c) calcium sulfate (d) copper(I) sulfide (e) lead(IV) oxide

Give the formulas of all the compounds containing no ions other than \(\mathrm{K}^{+}, \mathrm{Ca}^{2+}, \mathrm{Cl}^{-}\), and \(\mathrm{S}^{2-} .\)

How many nonmetals are in the following periods? (a) period 2 (b) period 4 (c) period 6

WEB See the definition of isobars in Question 15. Consider Na-21 and write the nuclear symbol for (a) an isotope of Na-21 that has one more neutron than \(\mathrm{Na}-21\). (b) an isobar of Na-21 with atomic number 10 . (c) a nucleus with 11 protons and 12 neutrons. Is this nucleus an isotope of \(\mathrm{Na}-21\) ?
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