These are the Hydrogen isotopes with the least mass:
Hydrogen 1-protium
Hydrogen 2-deuterium
Hydrogen 3-tritium
The most abundant isotope of arsenic is arsenic-75.
If hydrogen had a neutron, it wouldn't be hydrogen; it would be deuterium. If it had two neutrons, it would be tritium.
The most abundant elements in the universe, in order from most to least abundant, are Hydrogen, Helium, Oxygen, Carbon, and Nitrogen. Therefore, the correct list would start with Hydrogen, followed by Helium (not listed), then Oxygen, Carbon, and finally Nitrogen. The first option you provided, "Hydrogen Oxygen Nitrogen Carbon," is almost correct but is missing Helium and has an incorrect order for Nitrogen and Carbon.
Hydrogen atom have three isotope which is hydrogen , deuterium , and tritium.
As the atomic number of nitrogen is 7, the most abundant isotope of this atmospheric gas must have 7 neutrons (14.007 - 7 = about 7), and this will make nitrogen-14 that isotope that is most abundant.
Tritium is the most abundant hydrogen isotope
Hydrogen atom has an average mass not equal to its common isotope. The most common isotope of hydrogen, hydrogen-1, does not have a neutron in its nucleus, while the average mass of a hydrogen atom accounts for the other isotopes of hydrogen which do contain neutrons.
The most abundant isotope of arsenic is arsenic-75.
If hydrogen had a neutron, it wouldn't be hydrogen; it would be deuterium. If it had two neutrons, it would be tritium.
Protium and Deuterium are the same element. They are just the name of a certain isotope of Hydrogen. Protium is the most common form of hydrogen. It has 1 proton and 1 electron. Deuterium has 1 proton 1 neutron and 1 electron.
Protium (Hydrogen-1) is the lightest and by far the most common isotope of hydrogen.
Abundant
Hydrogen atom have three isotope which is hydrogen , deuterium , and tritium.
A hydrogen molecule only consists of one hydrogen atom, while a hydrogen atom consists of one proton and one electron while in its atom state. When it ionises it gains another electron to have a full inner shell of two electrons. The most common isotope of hydrogen has no neutrons but can have an isotope with one neutron.
As the atomic number of nitrogen is 7, the most abundant isotope of this atmospheric gas must have 7 neutrons (14.007 - 7 = about 7), and this will make nitrogen-14 that isotope that is most abundant.
The element with a mass number and atomic number of 1 is hydrogen. It is the lightest and most abundant element in the universe. Hydrogen is a key component of water and plays a vital role in the formation of stars through nuclear fusion.
Protium is the name of a common hydrogen isotope. This isotope has a single proton and does not have any neutrons.