0
A glance at the Periodic Table will tell you that Beryllium, atomic #4, has 4 protons in its nucleus.
What else can I help you with?
What element has only 4 neutrons in the nucleus and is metallic?
your mother
Use the helium-4 isotope to define atomic number and mass number Why does a knowledge of?
The atomic number of an element is defined as the number of protons in the nucleus of an atom. For helium-4 isotope, which is a nucleus with 2 protons, the atomic number is 2. The mass number is the total number of protons and neutrons in the nucleus. In the case of helium-4, it has 2 protons and 2 neutrons, giving it a mass number of 4. Understanding the atomic number and mass number of an element like helium-4 is important because it helps in identifying the element and distinguishing it from other elements. It also provides information on the stability and properties of the nucleus of the atom.
What element has 4 protons 4 neutrons and 3 electrons?
Beryllium To figure this out: The atomic number of an element is the number of protons the element has in the nucleus. Using this knowledge you can figure out which element has the atomic number of four, which in this case is Beryllium.
Explain the difference between atomic number and mass number?
Atomic number is the number of protons in the nucleus of an atom while the mass number is the sum of the protons and neutrons in the nucleus of an atom. for example lithium has an atomic number of 3 and a mass number of 7. Therefore lithium has 3 protons and 4 neutrons.
There are no known stable isotopes of the element with an atomic number of a 56 B 38 C100 D 20?
The element with an atomic number of 100 is Fermium (Fm), which does not have any stable isotopes. Fermium is a synthetic element that is produced in nuclear reactors and has only radioactive isotopes. Stable isotopes have a balance of protons and neutrons that result in a nucleus that does not undergo radioactive decay.
What particle has 2 neutrons and 2 protrons in its nucleus?
It could be either an alpha particle or a He-4 isotope.
How many protrons and neutrons does lithium have?
Lithium has 3 protons and typically 4 neutrons in its nucleus.
What element has 4 protrons 5 neutrons and 4 electrons?
Any atom with 4 protons is an atom of beryllium. If the atom is neutral, it must also have 4 electrons. However, 5 neutrons specifies an isotope, specifically Be-9, rather than an element as such.
What element has only 4 neutrons in the nucleus and is metallic?
your mother
When an alpha particle is emitted the nucleus of the original element?
An alpha particle is a helium-4 nucleus, and contains two protons and two neutrons. Therefore, the original nucleus will have two protons and two neutrons less. Its atomic number will be two less, and its atomic mass will be 4 less.
When a nucleus undergoes nuclear decay by gamma rays the atomic number of the element?
nothing, the nucleus just relaxes to a lower energy state that is more stable
Use the helium-4 isotope to define atomic number and mass number Why does a knowledge of?
The atomic number of an element is defined as the number of protons in the nucleus of an atom. For helium-4 isotope, which is a nucleus with 2 protons, the atomic number is 2. The mass number is the total number of protons and neutrons in the nucleus. In the case of helium-4, it has 2 protons and 2 neutrons, giving it a mass number of 4. Understanding the atomic number and mass number of an element like helium-4 is important because it helps in identifying the element and distinguishing it from other elements. It also provides information on the stability and properties of the nucleus of the atom.
What is the new element formed when Pb-210 undergoes alpha decay?
An alpha particle is a helium-4 nucleus. Look up the number of the element, and subtract two from that (since helium has 2 protons). As for the number, subtract 210 - 4 (since the alpha particle has an atomic mass of 4).
What is the atomic mass of an element with 4 protons 5 neutrons and 4 electrons?
The atomic mass of an element is the sum of the number of protons and neutrons in the nucleus. In this case, the element has 4 protons and 5 neutrons, so its atomic mass is 4 + 5 = 9 atomic mass units (amu). The number of electrons does not affect the atomic mass.
When a nucleus decays what typically happens to the element?
After an element's nucleus decays, it becomes one or more different elements. The type of decay determines what the new element(s) will be. The type of decay the nucleus of an element will undergo depends on the particular isotope of the particular element in question. For example, alpha decay results in an new element which has 2 less protons and 2 less neutrons (decrease in atomic number of 2 and decrease in mass number of 4). Fission results in an element splitting into two new elements of various sizes, accompanied by the release of other random particles. The two new "daughter" element's masses plus the masses of the other released particles will add up (approximately) to the mass of the original element. There are many other types of decay which produce different decay products.
What is the difference between helium-4 and helium-3?
Helium is a noble gas (group 18 element) and has two valence electrons (stable electronic configuration) and is chemically inert. Oxygen belongs to group 16 with 6 valence electrons and is reactive element.
What element has 4 protons 4 neutrons and 3 electrons?
Beryllium To figure this out: The atomic number of an element is the number of protons the element has in the nucleus. Using this knowledge you can figure out which element has the atomic number of four, which in this case is Beryllium.
