Which is the correct formula for titanium (iii) oxide?

a. ti2o3
b. tio
c. ti3o2
d. ti2o4

The correct answer is Option A.

Explanation:

Titanium is the 22nd element of the periodic table with electronic configuration of

In the naming of the compound, the oxidation state of this element is given +3.

Oxygen is the 8th element of the periodic table with electronic configuration

This element will easily gain 2 electrons and shows an oxidation state of -2.  

By criss-cross method, the oxidation state of titanium and oxygen gets reversed and they form the coefficients of the compound.

The compound formed by the combination of Titanium(III) and oxygen is having chemical name of Titanium (III) oxide.

Thus, the correct answer is Option A.

gas

explanation:

smoke is the matter of a gas

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.