Answer:
I think its B. a rocket resting in the docking claps just before the launch sequence is to begin.
Explanation: Sorry if its wrong
Your answer is 4 protons 4 electrons and 5 neutrons
Sodium- Na
most active element- Fluorine
lightest element- Hydrogen
Answer:
yes mass conservation is in 2Na+2H2O=2NaOH+H2
Explanation:
it tells how many atoms or molecules of a reactant or a product take part in the reaction
Bohr model is valid only for hydrogen and hydrogen-like species, but quantum mechanical model can explain all elements....