& Gas P was passed over heated magnesium ribbon and hydrogen gas was collected as shown in the diagram below: bys Magnesium ribbon Hydrogen gas Gak P UZ wa 4 7 Heat (0) Name gas P (1mk) (ii) Write an equation of the reaction that takes place in the combustion tube(2mks) (ii) State one precaution necessary at the end of this experiment(1mk) Ensure hydrogen burnod is pure.​

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.