Hope I helped you enjoy your day
Which has more atoms: 1 mole of hydrogen atoms or 1 mole of carbon-12 atoms?
1 answer:
You might be interested in
Answer is: beryllium-10.
The diagram shows that atom has 4 protons, 5 neutrons and 2 valence electrons.
Atomic number is the number of protons, which is characteristic of a chemical element, beryllium (Be) is an element with atomic number 4.
Two valence electrons means that atom is from 2. group of periodic table, only beryllium is from that group; sodium (1. group), boron (13. group) and carbon (14. group).
Beryllium-10 has 6 neutrons, so it is isotope (different number of neutrons or mass number).
<span>d)S is not one of them.
Here's an easy way to remember them, attached: </span>
Here's an easy way to remember them, attached: </span>