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How did the helium got the mass number 4?
helium has 2 protons and 2 neutrons. so its atomic number is 4
What is the atomic number and atomic mass number in nitrogen -15?
The atomic number is 7. The mass number is 15. The atomic mass is 15,000 108 898 2(7).
What is the atomic number and mass number of deuterium 2H?
The atomic number of deuterium (2H) is 1, as it has one proton in its nucleus. The mass number of deuterium is 2, which is the sum of the protons and neutrons in its nucleus (1 proton + 1 neutron = mass number of 2).
What is the symobel and atomic number and atomic mass for helium?
Symbol: He atomic #: 2 atomic mass: 4.002602
Atomic number of 2 and atomic mass of 4 how many neutrons?
To find the number of neutrons simply subtract the atomic number from the atomic mass. In this case there are two neutrons.
What is helium's atomic?
Helium's atomic number is 2 and its atomic mass is 4
What is hydrogen's atomic mass number?
Hydrogen is a gas. Mass number of it is 2.
What is the atomic number the atomic mass and the number of neutrons of the element hydrogen?
The 'standard' hydrogen atom has atomic number 1, atomic mass 1, no neutrons. Although there are 2 other isotopes of hydrogen: - (cant confirm name) which has atomic mass 2 and 1 neutron. - (cant confirm name) has atomic mass of 3 and 1 neutron. All isotopes have atomic number 1.
What is the atomic number and mass of helium?
Helium is a metal element. Atomic number of it is 2.
What is the atomic number and atomic mass number of the element that is formed in the following nuclear reaction that takes place in the sun?
The atomic number is 2, and the atomic mass is 4 (helium)
What is the number of neutrons for a specific element equal to?
The average number of neutrons that a specific element has is equivilent to the element's atomic mass minus the that elements atomic number. For example Helium has 2 neutrons because its atomic mass (4) minus the atomic number (2) is 2.
If i have Barium with an atomic number of 56 and an atomic mass of 137 and it undergoes alpha decay once and then beta minus decay what is my finishing atomic number and mass?
When barium (atomic number 56) undergoes alpha decay, it loses 2 protons and 2 neutrons, resulting in an atomic number of 54 and an atomic mass of 133 (56 - 2 = 54, 137 - 4 = 133). After that, during beta minus decay, a neutron is converted into a proton, which increases the atomic number by 1, leading to an atomic number of 55 while the atomic mass remains 133. Therefore, the final atomic number is 55 and the atomic mass is 133.
