What is the chemical formula of hydronium ion?

H₃O⁺

It's chemical formula is H3O+. It can also be formed by the combination of a H+ ion with an H2O molecule. The hydronium ion has a trigonal pyramidal geometry and is composed of three hydrogen atoms and one oxygen atom

Explanation:

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

answer: they produce more slow than unicellular organisms.