`He_2` molecule does not exist Explain.

3f orbital does not exist-explain.

3f orbital does not exist. Explain the Bohr's radius of first orbit of H_2 atom is 0.053nm. What is the radius of third orbit of Li^2+

What is the basic idea of Molecular orbital theory? How will you prove that neon molecule does not exist?

Ethers posses a dipole moment even if the alkyl radicals in the molecule are identical. Explain.

Explain the three states of matter in terms of inter - molecule forces . Explain the elastic property on the basis of inter - molecule forces .

[SiF_6]^(2-) exist but [Sicl_6]^(2-) does not Explain.

Does the molecule NaCl exists?