Example of Chemical Element Modelling

alchemy.rs

pub trait UniqueProperties {
    const ATOMIC_NUMBER: u32;
    const SYMBOL: &'static str;
    const PERIOD: u8;
}

pub struct Hydrogen;

impl UniqueProperties for Hydrogen {
    const ATOMIC_NUMBER: u32 = 1;
    const SYMBOL: &'static str = "H";
    const PERIOD: u8 = 1;
}

pub struct Atom<A: UniqueProperties>(A);

//Doesn't compile. How can I make the associated constants useable inside this trait implementation? 
impl<A, B> PartialEq<Atom<B>> for Atom<A>
    where A: UniqueProperties, B: UniqueProperties {
    fn eq(&self, other: &Atom<B>) -> bool {
        self.0::SYMBOL == other.0::SYMBOL
    }
}

fn main() {}