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 74.8 eV higher than the photon emitted in the n = 3 to n = 2 transition.
Estimate the average thermal energy of a helium atom at - Toppr
Hence, the average thermal energy of a helium atom at room temperature of 27 o C is 6.21 × 10 − 21 J. (ii) On the surface of the sun, T = 6000 K Average thermal energy = ( 3 / 2 ) k T
What is the overall charge of a helium atom? - Answers
2024年6月3日 · The nucleus of a helium atom is composed of 2 protons and 2 neutrons (the atomic number is 2 and the mass number is 4). Protons have a relative charge of +1 and neutrons a relative charge of 0, so ...
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 hydrogen molecule; Four times that of a hydrogen molecule; Half that of a hydrogen molecule
How can you combine 2 hydrogen atoms to form a helium atom?
2024年6月23日 · When two hydrogen atoms combine to form a helium atom, a process called nuclear fusion occurs. This releases a large amount of energy in the form of light and heat. This is the same process that ...
How does the mass of a water molecule compare with the mass of …
2024年6月10日 · The helium nucleus (using He4 for fun) contains two protons and two neutrons. ... . 4 x 1825 = 7300 The nucleus of a helium four atom is about 7300 times more massive than the electrons in that ...
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 form chemical bonds ...
The de-Broglie wavelength of helium atom at room temperature …
De Broglie wavelength for an average helium atom in a furnace at 400 K is k × 10 − 10 m. Find the value of k. Find the value of k. Here, Given the mass of helium = 4.002 a m u
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.
Which ion has the same electron configuration as an atom of He?
2024年5月21日 · The He+ ion (helium ion) has the same electron configuration as an atom of helium (He) because it has lost one electron, making it a 1+ ion. Both the helium atom and He+ ion have a total of 2 ...