Need asap with this chemistry if someone could me

1.) which one of the following has the strongest co bond?

lewis structures of formaldehyde, carbon dioxide, and carbon monoxide

h2co
co2
co
they all have the same strength co bond

2.) which one of the following elements has the greatest electronegativity?

al
p
n
b
na

3.) the electronegativities of four elements (l, m, q, and r) are as follows:
l: 1.1 m: 2.1 q: 2.4 r: 3.5

in which of the following diatomic molecules would the least polar bond be expected?

lm
mq
qr
lr
mr

4.) what is a reasonable lewis structure for the molecule ch2o?

5.) nitrogen–nitrogen bond lengths of 1.10, 1.25 and 1.45 å have been measured for different molecules.

match the molecules n2f2, n2, n2f4 with appropriate n-n bond length.
1.10 a 1.25 a 1.45 a
a. n2 n2f4 n2f2
b. n2 n2f2 n2f4
c. n2f4 n2 n2f2
d. n2f2 n2 n2f4
e. n2f4 n2f2 n2

6.)which of the following lewis structures are incorrect?
i only
ii only
iii only
i and ii
i, ii and iii

answer : the correct answer is 2) hno₃ and naoh .

arrhenius concept of acid and base :

acid :

according to arrhenius acid are those which release h⁺ or hydronium ion (h₃o⁺) in aqueous solution .

example : hcl +h₂o ↔ h₃o⁺ + cl⁻

hcl is giving h₃o⁺ ion in water , hence it is an arrhenius acid .

base :

according to arrhenius , bases are those which releases oh⁻ ions in aqueous solution .

example : koh (aq) ↔ k⁺ + oh⁻

since koh is producing oh⁻ ions hence , it is an arrhenius base .

checking the options :

1) ch₃oh and naoh :

ch₃oh is known as methanol , an organic compound , which is neutral compound . the dissociation of ch₃oh is negligible . it is very very weak acid (ka = 3.2 * 10 ⁻¹² ) .

naoh being ionic gives na⁺ and oh⁻ ions in aqueous solution as :

naoh ↔ na⁺ + oh⁻ . hence it is an arrhenius base

it can be concluded that ch₃oh and naoh is not arrhenius acid and base.

2) hno₃ and naoh :

hno₃ is an ionic compound which gives ions h⁺ and no₃⁻ ion in aqueous solution as:

hno₃ + h₂o ↔ h₃o⁺ + no₃⁻

since it is giving h⁺ ion . hno₃ is arrhenius acid .

naoh being ionic gives na⁺ and oh⁻ ions in aqueous solution as :

naoh ↔ na⁺ + oh⁻

. hence it is an arrhenius base .

it can be said that hno₃ and naoh are arrhenius acid and base.

3) ch₃oh and hcl

as discussed ch₃oh is neutral compound .

while hcl in aqueous solution dissociates to give h⁺ and cl⁻ ions as :

hcl + h₂o→ h₃o⁺ + cl⁻ . so hcl is arrhenius acid .

hence , ch₃oh and hcl are not arrhenius acid and base.

4) hno₃ and hcl :

hno₃ as discussed gives h⁺ in aqueous solution , while hcl also gives h⁺ in aqueous solution .

hence both hno₃ and hcl are arrhenius acid they are not acid and base .

so the arrhenius acid and base are 2) hno₃ and naoh.