Question

what are isobars? what is mass of helium

Answer 1

hiii. isobars are atoms that have same mass number (Greek isos equal + Greek baros weight) but different atomic numbers.
Isobars have different atomic numbers because they have different numbers of protons.
They have the same atomic mass because they have just enough neutrons to make the same total of nucleons.
76
32
Ge
and
76
34
Se
are isobars.
The first nucleus has 32 protons and 44 neutrons. The second has 34 protons and 42 neutrons. Each nucleus has 76 nucleons.
Isobars occur at different places in the Periodic Table......

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........hope it helps u.....thanks.... please mark brainliest.... please

Answer 2

two or more chemical species having same atomic mass but different atomic number are called as isobars.e.g. c-14 isotope of carbon and N are isobars.

mass of helium = 4amu or 4u .becuz it has two protons and 2 neutrons