Question

plz and 15th one.....I'll mark you as brainlyest

Answer 1

X is element sodium
Y is 4Na+O2->2NaO2 sodium peroxide
Z is NaO + 2 HO-> 2 NaOH + HO
Z is basic

hope it helps
pls mark as brainliest

Answer 2

t1/the element is Alkali
2/ during reaction it give hydroxide ion and hydrogen gas they form M20 compound
3/the hydroxide is formed durging the reaction of this alkali metal with water.
4/ the compound is basic