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What is helium's atomic?
Helium's atomic number is 2 and its atomic mass is 4
What is the atomic number and mass of helium?
Helium is a metal element. Atomic number of it is 2.
What is atomic weight of helium?
4.002602 g/mol
What is the mass number of helium atom?
The atomic number of helium is 2. Its mass is 4.002602 u ± 0.000002 u
What is heliums mass number?
Most helium has a mass number of 4. The rare 3He isotope has a mass number of 3. The mass number is the integer total of protons and neutrons for a given isotope. For example radioactive carbon-14 has a mass number of 14, while carbon-12 (the most common stable form) has a mass number of 12.
What is the isotopic notation for helium-4?
The isotopic notation for helium-4 is ^4He. This notation denotes the element's atomic number and mass number, which for helium-4 are 2 (atomic number) and 4 (mass number) respectively.
How do you calculate mass number of an atom?
The atomic mass is the number of protons plus the number of neutrons. The number of protons is identical to the atomic number (as well as electrons, but these don't matter right now). So, let's take helium. It has 2 protons and 2 neutrons, therefore the atomic mass # of helium is 4. Helium weighs 4 Atomic Mass Units (AMU).
How much does atomic mass helium have?
It's just 4.002602 amu
What element has an atomic mass of 4.0?
The element with an atomic mass of 4.0 is helium. Helium has an atomic number of 2, which means it has two protons in its nucleus. It also has two neutrons, giving it an atomic mass of 4.0.
What has got 4 mass number and 2 atomic number?
Helium
What is the atomic number of a helium atom?
The atomic number of Helium is 2 because there are 2 protons and 2 electrons.
4.002 is the atomic mass of which element?
4.002 is the atomic mass of helium, element number 2 on the periodic table. It is a light, colorless, odorless gas that is the second most abundant element in the universe. Helium is commonly used in balloons and cryogenics due to its low boiling point.
