An atom has an atomic number of 8 and a mass number of 17. How many protons, neutrons, and electrons does it have? What are isotopes and how do they relate to atomic number and mass number? Why is the average atomic mass for an element typically not a whole number?
百度试题 结果1 题目6 An atom of element Q contains 19 electrons, 19 protons and 20 neutrons.What is Q? B A calcium B potassium C strontium D yttrium 相关知识点: 试题来源: 解析 B 反馈 收藏
What is the maximum number of electrons in an atom that can have the following quantum numbers?(a) n = 2; (b) n = 3 and ,= 1; (c) n = 3,,= 1,and m,= 0; (d) n = 3, ,= 1,m,= −1,and ms = −1/2.
What element has 16 protons? What will an atom do if it has 1 to 3 valence electrons? An atom of an element has 10 protons. what is also true of that atom? A single atom of an element has 11 protons, 11 electrons, and 12 neutrons. Which element is it?
If an atom has an atomic number of 8, how many protons will it have? What is darmstadtium's atomic mass? What is effective atomic number? Is the atomic number equal to the number of electrons? What is the atomic mass of helium-4?
Advertisements Do Now: Take out your vocab 1. What is light? Chapter 13 – Review Electrons in Atoms Light is an electromagnetic wave EM wave- a form of energy that exhibits wavelike behavior as it travels through space All the forms of EM radiation form. ...
If an atom has 17 electrons, 20 neutrons, and 19 protons, what is its approximate atomic mass? What is the average mass of one S atom? What is the average atomic mass of a chlorine atom in atomic mass units? Define the following term: Atomic mass. ...
Since an atom contains equal number of protons and electrons, it has no overall charge: the positive charges on all the protons are exactly balanced by the negative charges on all the electrons. But sometimes an atom can gain or lose an electron to become what's called an ion. If it ...
Keith Cooper is a freelance science journalist and editor in the United Kingdom, and has a degree in physics and astrophysics from the University of Manchester. So how does nature build an atom? The basic picture is of a nucleus containing protons and neutrons surrounded by electrons that orbit...
Protons and neutrons are heavier than electrons and reside in the nucleus at the center of the atom. Electrons are extremely lightweight and exist in a cloud orbiting the nucleus. The electron cloud has a radius 10,000 times greater than the nucleus, according to theLos Alamos National Laborat...