a mushroom
Explanation:
it don't make sense because the tree is not food chain
Valence shell electrons are electrons, (e- for short) that live in the outermost shell of the e- cloud. These e- are often the ones associated with reactivity and bonding.
fluorine is an element on it's own so no
Answer:
Carbon 12 and 13 are carbon isotopes, meaning that they have additional neutrons:
Carbon 12 has exactly 6 protons and 6 neutrons ( hence the 12 )
Carbon 13 has 6 protons and 7 neutrons ( hence the 13 )
They differ in the number of neutrons in the nucleus.
Names:
carbon-13, C-13
carbon-12, C-12
