Question

What would you predict for the atomic number of the noble gas beyond Rn, if such an element had sufficient stability to be prepared or observed? Assume that 'g' orbitals are still not occupied in the ground states of the preceding elements.

Answer 1

Radon (Rn) is a p-block element belonging to the 6th period and 18th group. Its atomic number is eighty six.

The electronic configuration of the Radon element is $[Xe]\quad 4{ f }^{ 14 }5{ d }^{ 10 }6{ s }^{ 26 }{ p }^{ 6 }.$

Thus, the electronic configuration of element beyond Radon (Rn) would be $[Rn]7{ s }^{ 2 }5{ f }^{ 14 }6{ d }^{ 10 }7{ p }^{ 6 }.$

Therefore, the element is 2 + 14 + 10 + 6 = 32 electrons after the atomic number of Radon 86.

Hence, the atomic number of the element beyond Radon would be 32+86=118.

Answer 2

Hey mate.....

the atomic no. of the element is $\huge{\bold{\red{118}}}$