Question

The Lewis structure of perchloric acid(HCLO4) contains single
bonds, double bonds and lone pairs of electrons respectively
(a) 3,2,5
(b) 2,0,7
(c) 1, 2, 6
(d) 2, 3, 8​

Answer 1

The Lewis structure of perchloric acid(HCLO4) contains single

bonds, double bonds and lone pairs of electrons respectively

c) 1, 2, 6

Answer 2

Answer:

Explanation:

Perchloric acid (HClO4) has two single bonds, three double bonds, and eight lone pairs in its Lewis structure. (Option d is the right answer.)

Making a Lewis Dot Structure - Chlorine as the Central Atom (Cl)

$7*1$+ $6*4$+ $1*1$ = 32 total valence electrons

Electron pairs = 32/2 = 16 now.

Make a rough sketch after that

Calculating formal charges on the basis of the rough sketch:                  Formal Charge = Valence electrons - Nonbonding electrons - (1/2)                  *Bonding electrons                                                                              

 Cl → 7 - 0 - $(1/2)*8$ = 3                                                                                                  O bonded only to Cl → 6 - 6 - $(1/2)*2$ = -1                                                               O bonded to Cl and H both → 6 - 4 -$(1/2)*4$ = 0

Now, we will minimize the charges into bonds to get the final structure.

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