Um átomo apresenta 13 prótons e 14 nêutrons. a carga do íon estável formado a partir desse átomo será:
a)-2
b)-1
c)+1
d)+2
e)+3

a resposta deu letra (e) não

How much energy moves onto the next level, in an energy pyramid

One does not belong why? ice, gold ,wood ,diamond and table salt

If e is the symbol for an element, which two of the following symbols represent isotopes of the same element? 1. e2. e3. ea.1 and 2c.1 and 4b.3 and 4d.2 and 3