Helium atom has an atomic mass of 4 u and two protons in its
An atom of an element contains 13 electrons. Its nucleus has 14 neutrons. Find out its atomic number and approximate atomic mass.
A helium atom is two times heavier than a hydrogen molecule. At …
A helium atom is two times heavier than a hydrogen molecule. At 298 K, the average kinetic energy of a helium atom is : Two times that of a hydrogen molecule; Same as that of a …
Why helium exist in the form of he not he2? - Answers
2024年6月14日 · A helium atom is already in this state (it is a noble gas). A hydrogen atom only has one electron in its 1s orbital, which allows it to react readily with many different types of …
Helium atom is two times heavier than a hydrogen molecules. At 298
A helium atom is two times heavier than a hydrogen molecule. At 298 K, the average kinetic energy of a ...
Helium is two times heavier than hydrogen. The average kinetic
Helium atom is two times heavier than a hydrogen molecule at 298 K, the average kinetic energy of helium is.
Is helium a molecule? - Answers
2024年11月9日 · Helium is an atom. Heavier elements have molecules. Is helium diatomic? No. First consider two helium atoms, each has two electrons spin-paired in a filled 1s shell, for a …
An α -particle captures two electrons. What does it change to?
An alpha particle is a stable bound state of two protons and two neutrons, the same thing as a doubly ionized helium atom. If it it captures one electron it becomes a singly ionized helium …
What is the net charge of a helium atom? - Toppr
A helium atom has no charge, which means it has an oxidation number of 0. Neutrons have no charge. Since the numbers of protons and electrons are equal, the positive charge of the …
Why is the helium atom chemically inert? - Answers
2024年5月26日 · The helium atom is chemically inert because it has a complete outer shell of electrons, making it very stable. This full outer shell does not readily gain or lose electrons to …
A photon of wavelength 0.1overset {o} {A} is emitted by a helium …
Consider a hydrogen-like ionized atom with atomic number Z with a single electron. In the emission spectrum of this atom, the photon emitted in the n = 2 to n = 1 transition has energy …