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What has got 4 mass number and 2 atomic number?
Helium
What does a number 4 indicate for helium?
4 is the mass number of helium (mass number = number of protons + number of neutrons)
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.
Which isotope has the mass number of 4?
Helium-4.
What is the superscript 4 for helium?
4He or He4. 4 stands for the mass number of Helium Mass number = number of protons + number of neutrons Since the atomic number or number of protons in helium is 2, the number of neutrons in He-4 is also 2.
What is helium's atomic?
Helium's atomic number is 2 and its atomic mass is 4
What is the mass of helium?
helium = 4 molar mass
Draw atom with mass number 4 and atomic number 2?
Helium is a non metal element. Atomic mass number of it is 4.
Where is the mass number of an isotope of this atom that has 2 neutrons?
If you think to tritium (hydrogen-3) the mass number is 3.If you think to helium-4 the mass number is 4.
What is the number of protons of helium?
Helium is number 2 on the Periodic Table, and the number of its mass is 4. So, therefore it has 2 protons, 2 neutrons, and 2 electrons !
Why is helium heavier than air?
Helium is lighter than air because of atomic mass. Helium is element number two, whereas oxygen is element number 8. Oxygen has an atomic mass of 16, and helium has a mass of 4, so helium is 4 times lighter than air. (Atomic mass is the total mass of protons, neutrons, and electrons in a single atom.)
