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Ch.2 - Atoms, Molecules, and Ions
Brown - Chemistry: The Central Science 14th Edition
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Brown 14th EditionCh.2 - Atoms, Molecules, and Ions문제 92b,c,d
2장, 문제 92b,c,d

Identify the element represented by each of the following symbols and give the number of protons and neutrons in each: (b) 12753X (c) 8636X (d) 6730X

검증된 단계별 안내
1
Step 1: The atomic number (the subscript) represents the number of protons in an atom. In this case, the atomic number is 53, which corresponds to the element Iodine (I) in the periodic table.
Step 2: The atomic mass number (the superscript) represents the total number of protons and neutrons in an atom. In this case, the atomic mass number is 127.
Step 3: To find the number of neutrons, subtract the atomic number (number of protons) from the atomic mass number. So, the number of neutrons is 127 - 53.
Step 4: Therefore, the element represented by the symbol 12753X is Iodine (I), with 53 protons and 74 neutrons.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
3m

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Atomic Number

The atomic number of an element is the number of protons found in the nucleus of an atom. It uniquely identifies an element and determines its position on the periodic table. In the notation <sup>127</sup><sub>53</sub>X, the subscript '53' indicates that the element has 53 protons.
추천 영상:
가이드 코스
02:10
Atom Structure

Mass Number

The mass number of an atom is the total number of protons and neutrons in its nucleus. It is represented by the superscript in the notation <sup>127</sup><sub>53</sub>X, where '127' signifies the combined total of protons and neutrons. To find the number of neutrons, subtract the atomic number from the mass number.
추천 영상:
가이드 코스
02:19
Atomic Mass

Element Identification

Each element is defined by its unique atomic number, which corresponds to its chemical properties. By knowing the atomic number (53 in this case), one can identify the element as iodine (I). Understanding the relationship between atomic number, mass number, and elemental identity is crucial for interpreting chemical symbols.
추천 영상:
가이드 코스
01:15
Chalcogen Identification Example
관련 실천
교과서 질문

(b) Using the mass of the proton from Table 2.1 and assuming its diameter is 1.0 * 10-15 m, calculate the density of a proton in g>cm3.

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교과서 질문

Identify the element represented by each of the following symbols and give the number of protons and neutrons in each: (a) 7433X

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교과서 질문

The nucleus of 6Li is a powerful absorber of neutrons. It exists in the naturally occurring metal to the extent of 7.5%. In the era of nuclear deterrence, large quantities of lithium were processed to remove 6Li for use in hydrogen bomb production. The lithium metal remaining after removal of 6Li was sold on the market. (b) The atomic masses of 6Li and 7Li are 6.015122 and 7.016004 u, respectively. A sample of lithium depleted in the lighter isotope was found on analysis to contain 1.442% 6Li. What is the average atomic weight of this sample of the metal?

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교과서 질문

(a) Assuming the dimensions of the nucleus and atom shown in Figure 2.10, what fraction of the volume of the atom is taken up by the nucleus?

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교과서 질문

The nucleus of 6Li is a powerful absorber of neutrons. It exists in the naturally occurring metal to the extent of 7.5%. In the era of nuclear deterrence, large quantities of lithium were processed to remove 6Li for use in hydrogen bomb production. The lithium metal remaining after removal of 6Li was sold on the market. (a) What are the compositions of the nuclei of 6Li and 7Li?

1
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