Because group 1a and 2a are most reactive due to their least number of electrons in their outmost shell compared to group 8a(18)
Answer:
Bleached corals are likely to have reduced growth rates, decreased reproductive capacity, increased susceptibility to diseases and elevated mortality rates. Changes in coral community composition can occur when more susceptible species are killed by bleaching events.
Answer is valence electron, they all have total of 2 valence electron.
remember group number = valence electron
I would say 6.022<span>⋅1023 atom</span>
