Concept explainers
(a).
Interpretation:
The chemical symbol and
Concept Introduction:
Every element in the nature has given its own symbol, which is a shorthand method for representing the element. It is an easy way to represent the
(a).

Answer to Problem 85AP
The chemical symbol of astatine is At and its atomic number is 85.
Explanation of Solution
There are in total 118 elements known to exist in nature shown in the periodic table. Every element in the nature has given its own symbol, which is a shorthand method for representing the element. It is an easy way to represent the element by symbol instead of writing out the name of an element. The symbol of the element can be represented by one or two letters. For two letter symbols, only first letter is capitalized. The number of protons present in the nucleus of an atom signifies the atomic number of the atom, the atomic number is unique for every element.
Thus, chemical symbol of astatine is At and its atomic number is 85.
(b).
Interpretation:
The chemical symbol and atomic number of xenon should be determined.
Concept Introduction:
Every element in the nature has given its own symbol, which is a shorthand method for representing the element. It is an easy way to represent the element by symbol instead of writing out the name of an element. The symbol of the element can be represented by one or two letters. For two letter symbols, only first letter is capitalized.
(b).

Answer to Problem 85AP
The chemical symbol of xenon is Xe and its atomic number is 54.
Explanation of Solution
There are in total 118 elements known to exist in nature shown in the periodic table. Every element in the nature has given its own symbol, which is a shorthand method for representing the element. It is an easy way to represent the element by symbol instead of writing out the name of an element. The symbol of the element can be represented by one or two letters. For two letter symbols, only first letter is capitalized. The number of protons present in the nucleus of an atom signifies the atomic number of the atom, the atomic number is unique for every element.
Thus, chemical symbol of xenon is Xe and its atomic number is 54.
(c).
Interpretation:
The chemical symbol and atomic number of radium should be determined.
Concept Introduction:
Every element in the nature has given its own symbol, which is a shorthand method for representing the element. It is an easy way to represent the element by symbol instead of writing out the name of an element. The symbol of the element can be represented by one or two letters. For two letter symbols, only first letter is capitalized.
(c).

Answer to Problem 85AP
The chemical symbol of radium is Ra and its atomic number is 88.
Explanation of Solution
There are in total 118 elements known to exist in nature shown in the periodic table. Every element in the nature has given its own symbol, which is a shorthand method for representing the element. It is an easy way to represent the element by symbol instead of writing out the name of an element. The symbol of the element can be represented by one or two letters. For two letter symbols, only first letter is capitalized. The number of protons present in the nucleus of an atom signifies the atomic number of the atom, the atomic number is unique for every element.
Thus, chemical symbol of radium is Ra and its atomic number is 88.
Interpretation:
The chemical symbol and atomic number of strontium should be determined.
Concept Introduction:
Every element in the nature has given its own symbol, which is a shorthand method for representing the element. It is an easy way to represent the element by symbol instead of writing out the name of an element. The symbol of the element can be represented by one or two letters. For two letter symbols, only first letter is capitalized.

Answer to Problem 85AP
The chemical symbol of strontium is Sr and its atomic number is 38.
Explanation of Solution
There are in total 118 elements known to exist in nature shown in the periodic table. Every element in the nature has given its own symbol, which is a shorthand method for representing the element. It is an easy way to represent the element by symbol instead of writing out the name of an element. The symbol of the element can be represented by one or two letters. For two letter symbols, only first letter is capitalized. The number of protons present in the nucleus of an atom signifies the atomic number of the atom, the atomic number is unique for every element.
Thus, chemical symbol of strontium is Sr and its atomic number is 38.
e
Interpretation:
The chemical symbol and atomic number of lead should be determined.
Concept Introduction:
Every element in the nature has given its own symbol, which is a shorthand method for representing the element. It is an easy way to represent the element by symbol instead of writing out the name of an element. The symbol of the element can be represented by one or two letters. For two letter symbols, only first letter is capitalized.
e

Answer to Problem 85AP
The chemical symbol of lead is Pb and its atomic number is 8.
Explanation of Solution
There are in total 118 elements known to exist in nature shown in the periodic table. Every element in the nature has given its own symbol, which is a shorthand method for representing the element. It is an easy way to represent the element by symbol instead of writing out the name of an element. The symbol of the element can be represented by one or two letters. For two letter symbols, only first letter is capitalized. The number of protons present in the nucleus of an atom signifies the atomic number of the atom, the atomic number is unique for every element.
Thus, chemical symbol of lead is Pb (from the Latin word plumbum) and its atomic number is 82.
f
Interpretation:
The chemical symbol and atomic number of selenium should be determined.
Concept Introduction:
Every element in the nature has given its own symbol, which is a shorthand method for representing the element. It is an easy way to represent the element by symbol instead of writing out the name of an element. The symbol of the element can be represented by one or two letters. For two letter symbols, only first letter is capitalized.
f

Answer to Problem 85AP
The chemical symbol of selenium is Se and its atomic number is 34.
Explanation of Solution
There are in total 118 elements known to exist in nature shown in the periodic table. Every element in the nature has given its own symbol, which is a shorthand method for representing the element. It is an easy way to represent the element by symbol instead of writing out the name of an element. The symbol of the element can be represented by one or two letters. For two letter symbols, only first letter is capitalized. The number of protons present in the nucleus of an atom signifies the atomic number of the atom, the atomic number is unique for every element.
Thus, chemical symbol of selenium is Se and its atomic number is 34.
g
Interpretation:
The chemical symbol and atomic number of argon should be determined.
Concept Introduction:
Every element in the nature has given its own symbol, which is a shorthand method for representing the element. It is an easy way to represent the element by symbol instead of writing out the name of an element. The symbol of the element can be represented by one or two letters. For two letter symbols, only first letter is capitalized.
g

Answer to Problem 85AP
The chemical symbol of argon is Ar and its atomic number is 18.
Explanation of Solution
There are in total 118 elements known to exist in nature shown in the periodic table. Every element in the nature has given its own symbol, which is a shorthand method for representing the element. It is an easy way to represent the element by symbol instead of writing out the name of an element. The symbol of the element can be represented by one or two letters. For two letter symbols, only first letter is capitalized. The number of protons present in the nucleus of an atom signifies the atomic number of the atom, the atomic number is unique for every element.
Thus, chemical symbol of argon is Ar and its atomic number is 18.
h
Interpretation:
The chemical symbol and atomic number of cesium should be determined.
Concept Introduction:
Every element in the nature has given its own symbol, which is a shorthand method for representing the element. It is an easy way to represent the element by symbol instead of writing out the name of an element. The symbol of the element can be represented by one or two letters. For two letter symbols, only first letter is capitalized.
h

Answer to Problem 85AP
The chemical symbol of cesium is Cs and its atomic number is 55.
Explanation of Solution
There are in total 118 elements known to exist in nature shown in the periodic table. Every element in the nature has given its own symbol, which is a shorthand method for representing the element. It is an easy way to represent the element by symbol instead of writing out the name of an element. The symbol of the element can be represented by one or two letters. For two letter symbols, only first letter is capitalized. The number of protons present in the nucleus of an atom signifies the atomic number of the atom, the atomic number is unique for every element.
Thus, chemical symbol of cesium is Cs and its atomic number is 55.
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Chapter 4 Solutions
Introductory Chemistry: Foundation - Text (Looseleaf)
- Select the stronger base from each pair of compounds. (a) H₂CNH₂ or EtzN (b) CI or NH2 NH2 (c) .Q or EtzN (d) or (e) N or (f) H or Harrow_forward4. Provide a clear arrow-pushing mechanism for each of the following reactions. Do not skip proton transfers, do not combine steps, and make sure your arrows are clear enough to be interpreted without ambiguity. a. 2. 1. LDA 3. H3O+ HOarrow_forwardb. H3C CH3 H3O+ ✓ H OHarrow_forward
- 2. Provide reagents/conditions to accomplish the following syntheses. More than one step is required in some cases. a. CH3arrow_forwardIdentify and provide an explanation that distinguishes a qualitative and quantitative chemical analysis. Provide examples.arrow_forwardIdentify and provide an explanation of the operational principles behind a Atomic Absorption Spectrometer (AAS). List the steps involved.arrow_forward
- Instructions: Complete the questions in the space provided. Show all your work 1. You are trying to determine the rate law expression for a reaction that you are completing at 25°C. You measure the initial reaction rate and the starting concentrations of the reactions for 4 trials. BrO³¯ (aq) + 5Br¯ (aq) + 6H* (aq) → 3Br₂ (l) + 3H2O (l) Initial rate Trial [BrO3] [H*] [Br] (mol/L) (mol/L) | (mol/L) (mol/L.s) 1 0.10 0.10 0.10 8.0 2 0.20 0.10 0.10 16 3 0.10 0.20 0.10 16 4 0.10 0.10 0.20 32 a. Based on the above data what is the rate law expression? b. Solve for the value of k (make sure to include proper units) 2. The proposed reaction mechanism is as follows: i. ii. BrО¸¯ (aq) + H+ (aq) → HBrO3 (aq) HBrO³ (aq) + H* (aq) → H₂BrO3* (aq) iii. H₂BrO³* (aq) + Br¯ (aq) → Br₂O₂ (aq) + H2O (l) [Fast] [Medium] [Slow] iv. Br₂O₂ (aq) + 4H*(aq) + 4Br(aq) → 3Br₂ (l) + H2O (l) [Fast] Evaluate the validity of this proposed reaction. Justify your answer.arrow_forwardе. Д CH3 D*, D20arrow_forwardC. NaOMe, Br Brarrow_forward
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