What does the following element description actually mean 23892U?
What does the following element description actually mean? 23892U. A.a uranium atom with 92 protons and 146 neutrons.
Which statement describes how hydrogen 1 and hydrogen 2 differ?
Hydrogen- 2 has one neutron and hydrogen-1 has none.
What does the following element description actually mean 186O?
186O. an oxygen atom with 6 protons and 12 neutrons.
What does the following element description actually mean iron 57?
iron-57. iron with a mass number of 57. iron with a sum of the neutrons and the protons equal to 57.
What do the numbers 4 and 2 refer in the symbols for the alpha particle?
Equations for Alpha Decay For example, an alpha particle (helium nucleus) is represented by the symbol 42He, where He is the chemical symbol for helium, the subscript 2 is the number of protons, and the superscript 4 is the mass number (2 protons + 2 neutrons).
How many neutrons are present in 92u238?
146 neutrons The atomic number of uranium (see periodic table) is 92, and the mass number of the isotope is given as 238. Therefore, it has 92 protons, 92 electrons, and 238 — 92 : 146 neutrons. Its symbol is U23892 (or 238U).
Which two particles make up most of the mass of a hydrogen-2 atom?
Neutrons are located in the nucleus with the protons. Along with protons, they make up almost all of the mass of the atom. The number of neutrons is called the neutron number and can be found by subtracting the proton number from the atomic mass number.
Which statement best explains why hydrogen atomic number is equal to its mass?
As atomic number is equal to Number of protons and in case of hydrogen Mass number is equal to number of proton. Therefore atomic number is equal to its Mass number. Presence of no neutron is the reason for same atomic and mass number.
What is antimony’s atomic mass?
121.76 uAntimony / Atomic mass
What element has 4 protons 4 neutrons and 2 electrons?
Atomic Number
| Name | Protons | Electrons |
|---|---|---|
| Hydrogen | 1 | 1 |
| Helium | 2 | 2 |
| Lithium | 3 | 3 |
| Beryllium | 4 | 4 |
•Sep 3, 2019
How many electrons does H 1 have?
1Hydrogen / Electrons per shell
How many protons does Fe 57 have?
26 Properties of Iron-57 Isotope:
| Properties of Iron-57 Isotope: | IRON-57 |
|---|---|
| Atomic Number (Z) | 26 |
| Mass Number (A) | 57 |
| Nucleon Number (A) | 57 |
| Proton Number (Z) | 26 |
What does the 4 on alpha particle mean?
Equations for Alpha Decay For example, an alpha particle (helium nucleus) is represented by the symbol 42He, where He is the chemical symbol for helium, the subscript 2 is the number of protons, and the superscript 4 is the mass number (2 protons + 2 neutrons).
What does alpha particle mean?
What are alpha particles? Alpha particles (a) are composite particles consisting of two protons and two neutrons tightly bound together (Figure 1). They are emitted from the nucleus of some radionuclides during a form of radioactive decay, called alpha-decay.
How many electrons are contained in 92u238 nucleus?
Answer: Uranium has an atomic number of 92 which means there are 92 protons and 92 electrons in the atomic structure. U-238 has 146 neutrons in the nucleus, but the number of neutrons can vary from 141 to 146.
How many neutrons are in hydrogen?
no neutron Hydrogen has no neutron, deuterium has one, and tritium has two neutrons. The isotopes of hydrogen have, respectively, mass numbers of one, two, and three. Their nuclear symbols are therefore 1H, 2H, and 3H. The atoms of these isotopes have one electron to balance the charge of the one proton.
What 2 particles make up the atomic mass of an atom?
Together, the number of protons and the number of neutrons determine an element's mass number: mass number = protons + neutrons.
What 2 particles make up mass of an atom?
Only protons and neutrons contribute to an atom's mass value.
Which of the following best describes A hydrogen bond quizlet?
Oppositely charged ions are attracted to one another and form a weak, ionic bond. Which of the following best characterizes a hydrogen bond? t is a weak and temporary electrical attraction between two polar molecules. It is a strong chemical bond formed by the sharing of valence electrons.
Which of the following correctly describes A hydrogen bond?
Which of the following most correctly describes hydrogen bonding? Explanation: Hydrogen bonding occurs when a molecule contains a hydrogen atom bonded to fluorine, oxygen, or nitrogen. This hydrogen becomes partially positive in charge, while the attached atom becomes partially negative.
What is the symbol Livermorium?
LvLivermorium / Symbol Livermorium is a chemical element with symbol Lv and atomic number 116. Classified as a post-transition metal, Livermorium is a expected to be a solid at room temperature.
What element has 4 protons and 2 electrons?
Atomic Number
| Name | Protons | Electrons |
|---|---|---|
| Helium | 2 | 2 |
| Lithium | 3 | 3 |
| Beryllium | 4 | 4 |
| Boron | 5 | 5 |
•Sep 3, 2019
How many protons does be +2 have?
For example, silicon has 14 protons and 14 neutrons. Its atomic number is 14 and its atomic mass is 28. The most common isotope of uranium has 92 protons and 146 neutrons. Its atomic number is 92 and its atomic mass is 238 (92 + 146)….2.1 Electrons, Protons, Neutrons, and Atoms.
| Element | Beryllium | |
|---|---|---|
| Symbol | Be | |
| Number of Electrons in Each Shell | First | 2 |
| Second | 2 |
How many electrons does be 2+ have?
The electron configuration of beryllium ion(Be+2) is 1s2. This electron configuration shows that the beryllium ion(Be+2) has only one shell and that shell has a total of two electrons. The electron configuration shows that the beryllium atom has acquired the electron configuration of helium.
What atom is H+?
hydrogen atom hydrogen ion, strictly, the nucleus of a hydrogen atom separated from its accompanying electron. The hydrogen nucleus is made up of a particle carrying a unit positive electric charge, called a proton. The isolated hydrogen ion, represented by the symbol H+, is therefore customarily used to represent a proton.
How many electrons does hydrogen 2 have?
Deuterium is an isotope of hydrogen that is composed of one proton, one neutron, and one electron. The nucleus of deuterium is composed of a proton and a neutron. The symbol for deuterium is given as 2H. The atomic number of deuterium is 1 and the mass number is 2.
Which electron sublevel follows the 3d sublevel?
The 4p sublevel is filled next, after the 3d sublevel.
How many neutrons does nitrogen have?
7 neutrons Nitrogen is an atom that has 7 protons, 7 neutrons, and 7 electrons. The neutrons and protons are all stuck together in the middle of the atom and are called the nucleus.
What are alpha beta and gamma particles?
Gamma rays are neutral, while alpha particles have a positive charge and beta particles have a negative charge. Two protons and two neutrons are bound together to form an alpha particle. High-energy electrons are known as beta particles. Gamma rays are photons, which are electromagnetic energy waves.
How are α and β particles formed?
Alpha decay – A common mode of radioactive decay in which a nucleus emits an alpha particle (a helium-4 nucleus). Beta decay – A common mode of radioactive decay in which a nucleus emits beta particles. The daughter nucleus will have a higher atomic number than the original nucleus.