Chapter 18 The Late Comet (Extra for the Alliance Leader Trapped by Heart's Gate!)_4

Indeed, there's no denying it.

As for this element astatine, Lin Xian does have some impression of it, definitely a radioactive element.

And the number that follows represents the isotope of the astatine element.

Huh?

Lin Xian recalled the chemistry knowledge he once learned.

Astatine-339?

Impossible!

The atomic number of astatine is 85, how could there be an isotope like Astatine-339?

This is utterly unscientific!

"What exactly is Astatine-339?"

Lin Xian asked:

"This isotope... It's not just that it doesn't exist on Earth, it shouldn't exist in this universe at all."

"Exactly."

Gao Wen gave him an approving look;

"It seems your basic knowledge is indeed solid."

After speaking, he wrote Astatine-191~229 on the blackboard and explained: