Why does moist CL2 act as a bleaching agent?

Vapour density of mixture of NO2 and N2O4 is 34.4 , then percentage abundance (by volume) of NO2 in mixture is .

Molecular weight = 2×VD

                                = 2× 34.5 = 69 u

Consider ℅ of NO2 is "x" then % of N2O4 is "100-x"

What are the structure of CO2 , NO2+ , OCN- , SCN- ?

These molecules are isoelectronic so structure are also similar :

Similar Questions:

How can draw the Lewis Structure of CO?

How can describe the bonding in PF5 using hybrid orbital?

Why does CO form a coordinate bond?

In carbon monoxide molecule carbon and oxygen form a double bond by sharing of two bond pairs , in which 

carbon as well oxygen contributes 2 electrons to each other to form a double bond . 

Now octet of oxygen is completed but carbon is left with two (2) valence electrons and it has a total of six electrons so it's octet is incompleted.

Hence carbon is relatively unstable than oxygen atom because oxygen has nearest noble gas configuration of 8 electrons in their valence shell.

So in order to attain stability oxygen contributes one of its lone pair of electrons to the carbon atom in the formation of a coordinate bond . This leads to completion of octet of both carbon and oxygen .

Important note: 

In coordinate bond a pair of electrons is shared between two atoms but it is contributed by a single atom( Here contributor of lone pair is oxygen atom).

Similar Questions:

How can draw the Lewis Structure of CO?

How can describe the bonding in PF5 using hybrid orbital?

How can draw the Lewis Structure of CO?

The electronic configuration of carbon and oxygen atoms as

C6 =1s2 2s2 2p2
O8 =1s2 2s2 2p4

This information can be used to determine the Lewis Dot Structure of  Carbon monoxide (CO):

Step 1: calculate total valence electrons  for carbon and oxygen atoms.

C = 4
O = 6

Total electrons in CO molecule =10

Step 2: Find octet electrons for each atom , carbon and oxygen

C: 8
O: 8

Total octet electrons =16

Step 3: Find the bonding electrons Subtract total valence electron from total octet electrons

16-10=6 electron (3 bond pair)

Step 4: Find number of bonds between carbon and oxygen atoms  by dividing the number of bonding electrons by 2

6-electrons/2 = 3 bonds

Step 5: The rest are non bonding pairs. Subtract bonding electrons  from valence electrons .

10-6= 4e-= 2 lone pairs

The Lewis structure of CO is identical with that for HC:::CH  except that the C-H bond pair replace by lone pairs.

      "CO is also isoctronic with CN-"