For lithium isotopes, 92% are Lithium-6 and 7.6% are Lithium-5. How many neutrons am I most likely to find in a lithium sample?

Naturally occurring lithium (chemical symbol Li) (relative atomic mass : 6.941 (2)) is composed of two stable isotopes, lithium-6 and lithium - 7, with the latter being far more ... Lithium-4 contains threeprotons and one neutron ... An accurate atomic mass for samples of lithium cannot be measured for all sources of lithium.