Add lone pairs to these lewis structures of interhalogen compounds brf3 brf5

Explanation:

1.Halogen elements have different electro-negativity.  

“The binary compounds formed by halogens amongst themselves are known as  Inter-halogen compounds”.  

2.The inter-halogen compounds may be regarded as the halide of the more

electronegative halogen.  

Thus, since the electro positive character of halogens is

in the order F < Cl < Br < I

3. Since F has the least electropositive character, amongst inter-halogen compounds

4. Inter-halogens can be grouped into four categories: AB, AB3, AB5, and AB7. Here

A halogen atom is more electropositive and larger in size than B halogen atom.

5. The oxidation state of atom A in AB, AB3, AB5, and AB7 molecules is equal to

+1, +3, +5 and +7 respectively.

6 .As the ratio between the radii of A and B atoms increases, the number of halogen

atoms per molecule increases.

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.