# How do you write the electron dot diagram for the hydronium ion H_3O^+?

##### 1 Answer
May 23, 2018

Just treat it on the basis of VESPER....you got ${H}_{3} {\ddot{O}}^{+}$

#### Explanation:

Electronic geometry of ${H}_{2} \ddot{O} :$ is precisely the same as that of ${H}_{3} {\ddot{O}}^{+}$...we conceive that ONE of the lone pair electrons of water donates to an ${H}^{+}$ ion...

${H}_{2} \ddot{O} : + {H}^{+} r i g h t \le f t h a r p \infty n s {H}_{3} {\ddot{O}}^{+}$

...the hydronium ion is thus isostructural with ammonia, i.e. pyramidal...the formal positive charge is conceived to lie on oxygen...