Which particle has: 7 protons, 8 neutrons and 7 electrons?

Question

BlackTom AI · Accepted Answer

The question asks to identify the particle with 7 protons, 8 neutrons, and 7 electrons. 
First, note that the number of protons (7) defines the element (its atomic number Z = 7). An element with Z = 7 is nitrogen, symbol N.
Next, the number of neutrons is 8, which together with 7 protons gives a mass number A = Z + N = 7 + 8 = 15, so this matches nitrogen-15 if needed for isotopic specification.
Finally, the number of electrons is 7. In a neutral atom, the number of electrons equals the number of protons, so having 7 electrons is consistent with a neutral nitrogen atom (no net charge).
Now evaluate the options:
- O: This option would correspond to oxygen, which has 8 protons (Z = 8). Since our particle has 7 protons, this cannot be O. The mismatch in atomic number immediately rules it out.
- N1-: This would be a nitrogen-based species with a 1- charge, meaning it would have 8 electrons (since electrons increase with negative charge). Our particle has 7 electrons, so this option fails due to the incorrect electron count and charge state.
- Ne: Neon has 10 protons (Z = 10). The given proton count is 7, so this is not Ne.
- N: This corresponds to nitrogen with Z = 7. With 7 protons and 7 electrons, the atom would be neutral, and 8 neutrons yields mass number 15, which is consistent with the provided counts. Therefore, this option matches all specified quantities.
In summary, the combination of 7 protons, 8 neutrons, and 7 electrons aligns with a neutral nitrogen atom (nitrogen-15), whereas the other options fail due to incorrect proton count, incorrect electron count/charge, or incorrect element identity.

HonNxtGenChem A NGC Module 3 - Practice Quiz

Which particle has: 7 protons, 8 neutrons and 7 electrons?

查看解析

登录即可查看完整答案

类似问题

The nucleus can be positively or negatively charged depending on the identity of the atom.

How many protons, neutrons, and electrons are in one atom of 67Zn ?

Read each statement below and identify all true statements. Circle all correct answers.

In any neutral atom, there are equal numbers of

A 187Re3- anion contains [Fill in the blank] protons, [Fill in the blank] neutrons, and [Fill in the blank] electrons. (Input numbers only.)

Which of the following statements about the modern atomic model is/are incorrect?

Atoms are composed of

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单