Skip to main content
Ch.2 - Atoms, Molecules, and Ions
Brown - Chemistry: The Central Science 15th Edition
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Brown 15th EditionCh.2 - Atoms, Molecules, and Ions문제 23a
2장, 문제 23a

Consider an atom of 10B. (a) How many protons, neutrons, and electrons does this atom contain?

검증된 단계별 안내
1
Step 1: Identify the atomic number of Boron (B). The atomic number is the number of protons in an atom, and it is unique to each element. For Boron, the atomic number is 5, which means there are 5 protons.
Step 2: Identify the mass number of the atom. The mass number is given as the superscript before the element symbol. In this case, the mass number of 10B is 10.
Step 3: Calculate the number of neutrons. The number of neutrons in an atom can be found by subtracting the atomic number from the mass number. So, for 10B, the number of neutrons is 10 (mass number) - 5 (atomic number).
Step 4: Determine the number of electrons. In a neutral atom, the number of electrons is equal to the number of protons. So, for 10B, there are 5 electrons.
Step 5: Summarize the results. The 10B atom contains 5 protons, 5 neutrons, and 5 electrons.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
4m
도움이 되었나요?

주요 개념

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

Atomic Structure

Atoms are the basic units of matter, consisting of protons, neutrons, and electrons. Protons are positively charged particles found in the nucleus, while neutrons are neutral particles also located in the nucleus. Electrons are negatively charged particles that orbit the nucleus. The number of protons defines the element, while the total number of protons and neutrons gives the atomic mass.
추천 영상:
가이드 코스
02:10
Atom Structure

Isotopes

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons. For example, the isotope 10B (Boron-10) has 5 protons and 5 neutrons, distinguishing it from other isotopes of boron, such as 11B, which has 6 neutrons. Isotopes can have different physical properties and stability.
추천 영상:
가이드 코스
04:36
Isotopes

Charge Neutrality

Atoms are electrically neutral when the number of protons equals the number of electrons. In a neutral atom, the positive charge of protons balances the negative charge of electrons. Therefore, for an atom of 10B, which has 5 protons, it will also have 5 electrons to maintain this charge neutrality.
추천 영상:
가이드 코스
01:53
Formal Charge
관련 실천
교과서 질문

Determine whether each of the following statements is true or false. d. The protons in the nucleus of the helium atom are held together by a force called the strong nuclear force.

4
views
교과서 질문

Consider an atom of 10B. (c) What is the symbol of the atom obtained by adding one neutron to 10B?

732
views
교과서 질문

Consider an atom of 10B. (d) Are either of the atoms obtained in parts (b) and (c) isotopes of 10B? If so which one?

375
views
교과서 질문

Consider an atom of 10B. (b) What is the symbol of the atom obtained by adding one proton to 10B?

485
views
교과서 질문

Determine whether each of the following statements is true or false. c. The number of electrons in an atom equals the number of neutrons in the atom.

3
views
교과서 질문

Determine whether each of the following statements is true or false. b. Every atom of a given element has the same number of protons.

3
views