Campbell Biology Custom Stony Brook 10 Th Edition
10th Edition
ISBN: 9781269870818
Author: Reece Urry Cain Wasserman Minorsky Jackson
Publisher: PEARSON
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Textbook Question
Chapter 2.2, Problem 2CC
A nitrogen atom has 7 protons, and the most common isotope of nitrogen has 7 neutrons. A radioactive isotope of nitrogen has 8 neutrons. Write the atomic number and mass number of this radioactive nitrogen as a chemical symbol with a subscript and superscript.
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What if there are a different number of Neutrons?
Sometimes elements have a different number of neutrons than usual, so therefore have a different atomic mass. This is what we call an Isotope (a variant form of an element which has the same number of protons but a differing number of neutrons).
Sometimes we’ll see Isotopes labeled with their new mass like this:
14C = this is Carbon 14. Notice it has a different mass than what is on your periodic table
The average mass of all the isotopes is defined as an element’s Atomic Weight. Can you answer questions about these Isotopes?
ELEMENT
ATOMIC MASS
NUMBER OF PROTONS
NUMBER OF NEUTRONS
14C
A
B
C
15N
D
E
F
2H
G
H
I
Use your table to look up the number of protons, remember that never changes!
for the first 10 atoms from the periodic table determine:
the atom full name and chemical symbol
atomic number
atomic mass
how many protons, Neutrons and electrons?
Abundance in nature
Chlorine is an element with the symbol Cl. Draw and label atomic structure of chlorine indicating the number and locations of protons, neutrons and electrons in one atom of chlorine.
Chapter 2 Solutions
Campbell Biology Custom Stony Brook 10 Th Edition
Ch. 2.1 - MAKE CONNECTIONS Explain how table salt has...Ch. 2.1 - Is a trace element an essential element? Explain.Ch. 2.1 - Prob. 3CCCh. 2.1 - MAKE CONNECTIONS Explain how natural selection...Ch. 2.2 - Prob. 1CCCh. 2.2 - A nitrogen atom has 7 protons, and the most common...Ch. 2.2 - Prob. 3CCCh. 2.2 - Prob. 4CCCh. 2.3 - Why does the structure H C = C H fail to make...Ch. 2.3 - What holds the atoms together in a crystal of...
Ch. 2.3 - What holds the atoms together in a crystal of...Ch. 2.4 - Prob. 1CCCh. 2.4 - Which type of chemical reaction, if any, occurs...Ch. 2.4 - WHAT IF? Write an equation that uses the products...Ch. 2 - Prob. 2.1CRCh. 2 - DRAW IT Draw the electron distribution diagrams...Ch. 2 - In terms of electron sharing between atoms,...Ch. 2 - What would happen to the concentration of products...Ch. 2 - Level 1: Knowledge/Comprehension 1. In the term...Ch. 2 - Compared with 31P, the radioactive isotope 32P has...Ch. 2 - The reactivity of an atom arises from (A) the...Ch. 2 - Which Statement is true of all atoms that are...Ch. 2 - Which of the following statements correctly...Ch. 2 - Prob. 6TYUCh. 2 - The atomic number of sulfur is 16. Sulfur combines...Ch. 2 - What coefficients must be placed in the following...Ch. 2 - DRAW IT Draw Lewis dot structures for each...Ch. 2 - EVOLUTION CONNECTION The percentages of naturally...Ch. 2 - Prob. 11TYUCh. 2 - Prob. 12TYUCh. 2 - Prob. 13TYU
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Iodine has 37 known isotopes. Therefore, the atomic mass has a range of 108-144 amu. Which of the following statements concerning iodine is correct? A) The isotopes of iodine have between 55 and 91 protons. B) An atom of iodine can have between 55 and 91 neutrons. C) The isotopes of iodine will always have the same number of neutrons, but the protons can vary. D) The isotopes of iodine have between 108 and 144 neutrons, but the number of protons will not vary.arrow_forwardDo a web search to identify each of the following elements>isotopes and indicate the number of neutrons, protons, and electrons in an atom of the element>isotope:arrow_forwardAccording to chemist John Dalton, if one mole of nitrogen is combined with three moles of hydrogen to form one mole of ammonia (knowing that nitrogen, with an atomic number of 7, has an atomic mass of 14, and hydrogen, with an atomic number of 1, has an atomic mass of 1), then this compound will have an atomic weight (or molecular mass) of: 14 grams per mole (14 daltons) 17 grams per mole (17 daltons) 20 grams per mole (20 daltons) 22 grams per mole (22 daltons) 43 grams per mole (43 daltons)arrow_forward
- Complete the following table Symbol # protons # electrons # neutrons Atomic Mass Number Number 60CO 27 53 127 25 34 80arrow_forwardRefer to the following figure (first three rows of the periodic table) to answer the questions below. What element does not react with other elements? Group of answer choices A. hydrogen B. helium C. oxygen D. siliconarrow_forwardAtoms of the same element that differ only in the number of neutrons are known asarrow_forward
- a certain element consists of two stable isotopes. the first has a mass of 138 amuarrow_forwardwhich of the sub-atomic particles is commonly represented by this symbol:"e-"?arrow_forwardExplain why lung and soft tissue appear different on a radiograph when they have both an effective atomic number of 7.4?arrow_forward
- An ion has 15 protons, 16 neutrons, and 18 electrons. The symbol for the ion is 31P3+. 31P3-. 31Ar3+. 34S+. 34S-.arrow_forwardAccording to chemist John Dalton, if one mole of oxygen is combined with two moles of hydrogen to form one mole of water (when hydrogen has an atomic number of 1 and an atomic mass of 1, and oxygen has an atomic number of 8 and an atomic mass of 16), then this compound has an atomic mass: of 42 grams per mole (42 daltons) of 38 grams per mole (38 daltons) of 32 grams per mole (32 daltons) of 20 grams per mole (20 daltons) of 18 grams per mole (18 daltons)arrow_forwardA nitrogen atom has 7 protons, and the most commonisotope of nitrogen has 7 neutrons. A radioactive isotopeof nitrogen has 8 neutrons. Write the atomic number andmass number of this radioactive nitrogen as a chemicalsymbol with a subscript and superscript.arrow_forward
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