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)
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- Please correct answer and don't used hand raitingarrow_forwardQ2. Consider the hydrogenation of ethylene C2H4 + H2 = C2H6 The heats of combustion and molar entropies for the three gases at 298 K are given by: C2H4 C2H6 H2 AH comb/kJ mol¹ -1395 -1550 -243 Sº / J K¹ mol-1 220.7 230.4 131.1 The average heat capacity change, ACP, for the reaction over the temperature range 298-1000 K is 10.9 J K¹ mol¹. Using these data, determine: (a) the standard enthalpy change at 800 K (b) the standard entropy change at 800 K (c) the equilibrium constant at 800 K.arrow_forward13. (11pts total) Consider the arrows pointing at three different carbon-carbon bonds in the molecule depicted below. Bond B Bond A Bond C a. (2pts) Which bond between A-C is weakest? Which is strongest? Place answers in appropriate boxes. Weakest Bond Strongest Bond b. (4pts) Consider the relative stability of all cleavage products that form when bonds A, B, AND C are homolytically cleaved/broken. Hint: cleavage products of bonds A, B, and C are all carbon radicals. i. Which ONE cleavage product is the most stable? A condensed or bond line representation is fine. ii. Which ONE cleavage product is the least stable? A condensed or bond line representation is fine. c. (5pts) Use principles discussed in lecture, supported by relevant structures, to succinctly explain the why your part b (i) radical is more stable than your part b(ii) radical. Written explanation can be no more than one-two succinct sentence(s)! Googlearrow_forward
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