
Concept explainers
Interpretation: Option representing a pair of isotopes needs to be identified.
Concept Introduction: Every matter is made of chemicals; the importance of chemistry is that it's the study of everything. Chemistry is all about how something interacts to affect the structure, composition, as well as knowing properties of substances.

Answer to Problem 4STP
Correct answer: The correct option is C.
Explanation of Solution
Reason for correct option:
An atom has a nucleus with a positive charge due to its protons and has electrons in the space surrounding the nucleus at relatively large distance from it. Isotopes are atoms of same element with different neutrons.
Isotopes of an element will have different masses and number of neutrons and also, it has same number of electrons, protons.
According to the definition of isotopes, carbon
Reasons for incorrect options:
Option A: This option does not represent a pair of isotopes. So, this is an incorrect option.
Option B: This option does not represent a pair of isotopes. So, this is an incorrect option.
Option D: This option does not represent a pair of isotopes. So, this is an incorrect option.
Chapter 3 Solutions
World of Chemistry, 3rd edition
- Add conditions above and below the arrow that turn the reactant below into the product below in a single transformation. + More... If you need to write reagents above and below the arrow that have complex hydrocarbon groups in them, there is a set of standard abbreviations you can use. More... T H,N NC Datarrow_forwardIndicate the order of basicity of primary, secondary and tertiary amines.arrow_forward> Classify each of the following molecules as aromatic, antiaromatic, or nonaromatic. Cl Z- N O aromatic O antiaromatic O nonaromatic O aromatic O antiaromatic O nonaromatic O aromatic ○ antiaromatic nonaromaticarrow_forward
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- 3) Label the configuration in each of the following alkenes as E, Z, or N/A (for non-stereogenic centers). 00 E 000 N/A E Br N/A N/A (g) E N/A OH E (b) Oz N/A Br (d) 00 E Z N/A E (f) Oz N/A E (h) Z N/Aarrow_forward6) Fill in the missing Acid, pKa value, or conjugate base in the table below: Acid HCI Approximate pK, -7 Conjugate Base H-C: Hydronium (H₂O') -1.75 H-O-H Carboxylic Acids (RCOOH) Ammonium (NH4) 9.24 Water (H₂O) H-O-H Alcohols (ROH) RO-H Alkynes R--H Amines 25 25 38 HOarrow_forward5) Rank the following sets of compounds in order of decreasing acidity (most acidic to least acidic), and choose the justification(s) for each ranking. (a) OH V SH я вон CH most acidic (lowst pKa) least acidic (highest pKa) Effect(s) Effect(s) Effect(s) inductive effect O inductive effect O inductive effect electronegativity electronegativity O electronegativity resonance polarizability resonance polarizability O resonance O polarizability hybridization Ohybridization O hybridization оarrow_forward
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