Mute
pulsardopensamento
O elemento mais abundante no universo é o hidrogênio (H). Estima-se que ele constitua cerca de 75% da massa de toda a matéria e represente 93% dos átomos do cosmo. O hidrogênio é também o elemento químico mais simples e mais leve, com apenas um próton no núcleo e um elétron em sua eletrosfera. Após o hidrogênio, o hélio é o segundo elemento mais abundante, constituindo aproximadamente 23% da massa do universo visível.
Follow
38
2
15
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