Chemistry Questions

Allotropes are the different physical forms of an element. Here in the given options, diamond and graphite are the pair of allotropes of carbon.

Some more examples are Molecular oxygen and ozone are pair of allotropes, Black and red phosphorous are also pairs of allotropes.

The water molecule has a dipole with the negative portion pointing toward the oxygen atom.

In the periodic table, the atomic radius increases from top to bottom in the groups and it increases from right to left in the periods.

Francium is the atom with largest atomic radius. Helium is the atom with smallest radius.

Flourine is the most electro negative element due to its small atomic radius .It also has the tendency to accept an electron to complete octet configuration

Lithium is the lightest of all the metals due to its low atomic number among meetals