The mass number is unique to each element and may be used to identify the elemen
ID: 970581 • Letter: T
Question
The mass number is unique to each element and may be used to identify the element Isotopes are atoms of the same element that have the same number of neutrons. The result of alpha decay is moving forward two spaces on the periodic table, that is, the daughter product has two more protons in its nucleus. Short Answer 1. The sulfide ion (S^2) is an important anion used in the separation and confirmation of Groups I-IV cations. Describe the health and safety concerns of using H_2S and thioacetamide as the S^2+ donor. which is used most frequently and why is its use preferential? Both H_2S and thioacetamide are used as precipitating agents for separating the Groups II and III cotions. Describe the primary distinguishing characteristic between these two groups since both groups of cations are separated as sulfides. what is selective precipitation? Give at least one specific example of selective precipitation.Explanation / Answer
18) False
Atomic Number is unique for each element.
19) False
Isotopes have same atomic number but different number of neutrons, thus same atomic number but different mass number.
20) False
The daughter nucleus will have two less protons.
AZX ---> A-4Z-2X' + 42
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