Atomic nuclei - Marvel Education

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Practice Reading: Fill in the Blanks (Dropdown) ID: #34899 Atomic nuclei

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Atomic nuclei come in a dizzying number of varieties. Scientists have discovered 118 chemical elements, by the number of protons in their nuclei. Each of those elements has a variety of isotopes, different versions of the element formed by switching up the number of neutrons inside the nucleus. Scientists have predicted the of about 8,000 isotopes of known elements, but only about 3,300 have made an appearance in detectors. Researchers expect FRIB will make a dent in the missing isotopes. It may identify 80 percent of possible isotopes for all the elements up through uranium, including many never seen before. The most familiar nuclei are those of the roughly 250 isotopes that are stable: they don't to other types of atoms. The ranks of stable isotopes include the nitrogen-14 and oxygen-16 in the air we breathe and the carbon-12 found in all known living things. The number following the element's name the total number of protons and neutrons in the nucleus.

Result:

A.I. Explanation:

Correct answer: distinguished
Explanation: The word 'distinguished' fits grammatically as it describes how the elements are categorized based on the number of protons, aligning with the context of classification in scientific terms. It is in the past participle form, which is appropriate here to indicate a completed action related to the elements.
Meaning: 'Distinguished' means recognized or set apart due to specific characteristics, in this case, the number of protons in the nuclei of the elements.
Wrong options:
understood: 'Understood' implies comprehension, which does not fit the context of categorizing elements based on protons.
undertake: 'Undertake' means to take on a task or responsibility, which is irrelevant to the classification of elements.
disobeyed: 'Disobeyed' refers to failing to follow rules or commands, which is not applicable in this scientific context.
Correct answer: existence
Explanation: The word 'existence' is appropriate as it refers to the predicted presence of isotopes, fitting grammatically and contextually as a noun that aligns with the scientific prediction being discussed.
Meaning: 'Existence' means the state of being or occurring, in this case, referring to the anticipated presence of isotopes.
Wrong options:
absence: 'Absence' means not being present, which contradicts the context of predicting the presence of isotopes.
remorse: 'Remorse' refers to deep regret, which is unrelated to the scientific discussion of isotopes.
data: 'Data' refers to factual information, which does not fit as it does not convey the concept of predicted presence.
Correct answer: sizable
Explanation: The word 'sizable' fits grammatically as an adjective describing the extent of the dent expected to be made in the missing isotopes, aligning well with the context of scientific discovery.
Meaning: 'Sizable' means considerable in size or amount, indicating a significant impact on the number of missing isotopes.
Wrong options:
relatable: 'Relatable' means able to be related to or understood, which does not fit the context of measuring impact.
movable: 'Movable' refers to something that can be moved, which is irrelevant in this context of scientific discovery.
low: 'Low' indicates a small amount or degree, which contradicts the expectation of a significant impact.
Correct answer: decay
Explanation: The word 'decay' fits grammatically as a verb that describes the process of isotopes transforming into other types of atoms, which is the correct scientific terminology in this context.
Meaning: 'Decay' means to break down or decompose, specifically referring to the process by which unstable isotopes transform into more stable forms.
Wrong options:
talk: 'Talk' refers to verbal communication, which is not relevant to the scientific process of isotopes.
prompt: 'Prompt' means to cause or bring about, which does not fit the context of isotopes changing into other atoms.
indicate: 'Indicate' means to show or point out, which does not apply to the process of isotopes transforming.
Correct answer: indicates
Explanation: The word 'indicates' fits grammatically as a verb in the present tense, describing the action of the number following the element's name, which is to show the total number of protons and neutrons.
Meaning: 'Indicates' means to show or point out, in this case, referring to how the number reveals the composition of the nucleus.
Wrong options:
will indicates: This phrase is grammatically incorrect as 'will' should not precede 'indicates' in this context.
had indicate: This phrase is incorrect due to the improper verb form; 'had' should be followed by the past participle 'indicated'.
have not indicated: This phrase is incorrect as it suggests a lack of indication, which contradicts the intended meaning of the sentence.

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