Questions

Main memory works in conjunction with CPU.

You have to consider three things.

1. First, are the bonds polar?

Look at differences in electronegativity and if  it is >0.5, bonds are polar.

2. Second, does the molecule have unshared electron pairs?

If so, they generally lead to a polar molecule.

3. Third, is the molecule symmetric?

If so, then although the bonds may be polar, the symmetry cancels out the individual bond polarity and the molecule is non polar.

CF4 follows all the rules above and has a symmetric distribution of charge, making it nonpolar. The others all have asymmetric charge distributions.

Hence, CF4 represents a Non-polar molecule.

There are many isotopes of uranium and all of them have same atomic number i.e, sum of nmber of neutrons and protons.

The world's tallest twisted tower, the Infinity Tower was launched in Dubai Marina on 10 June 2013.