Question

2.4 why do all isotopes of an element have the same chemical properties? how are isotopes of an element different? 2.5 a student is told to study the chemicals nitrogen monoxide (no) and nitrogen dioxide (no₂) and determine their differences. the student reports that there are no differences between the molecules because they are made up of the same elements. is the student right or wrong? why? 2.6 name each element and the number of atoms of that element in one molecule of acetic acid (c₂h₄o₂), which is the active ingredient of vinegar. 2.7 what is the difference between ionic and covalent bonds? give an example of each type of bond

Explanation:

2.4

Chemical properties are determined by the number of electrons and their arrangement. Isotopes have the same number of protons and electrons, so they have the same chemical - properties. They differ in the number of neutrons, which affects their mass.

Although NO and NO₂ are made of the same elements (nitrogen and oxygen), the ratio of nitrogen to oxygen atoms is different. This leads to different chemical and physical properties.

In the acetic - acid molecule (C₂H₄O₂), we identify the elements and count the number of atoms of each based on the chemical formula.

Answer:

All isotopes of an element have the same chemical properties because they have the same number of protons and electrons. Isotopes of an element are different in the number of neutrons in their nuclei.

2.5