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use super::Element;
use crate::Electronvolt;
#[cfg(feature = "ranges")]
/// Range from the minimum to the maximum electron affinity across all elements
///
/// Convenience constant to avoid writing the code below when this range is needed:
///
/// ```
/// use mendeleev::{Element, ELECTRON_AFFINITY_RANGE};
/// let all_values = Element::iter().flat_map(|e| e.electron_affinity());
/// let min = all_values.clone().min_by(|a, b| a.total_cmp(&b)).unwrap();
/// let max = all_values.max_by(|a, b| a.total_cmp(&b)).unwrap();
/// assert_eq!(min..=max, ELECTRON_AFFINITY_RANGE);
/// ```
pub const ELECTRON_AFFINITY_RANGE: core::ops::RangeInclusive<Electronvolt> =
Electronvolt(0.079)..=Electronvolt(3.617);
macro_rules! ev {
($value:literal) => {
Some(Electronvolt($value))
};
}
impl Element {
/// Returns the element's electron affinity, if available.
///
/// ```
/// use mendeleev::{Element, Electronvolt};
/// assert_eq!(Element::H.electron_affinity(), Some(Electronvolt(0.754)));
/// ```
pub const fn electron_affinity(&self) -> Option<Electronvolt> {
use Element as E;
match self {
E::H => ev!(0.754),
E::He => None,
E::Li => ev!(0.618),
E::Be => None,
E::B => ev!(0.277),
E::C => ev!(1.263),
E::N => None,
E::O => ev!(1.461),
E::F => ev!(3.339),
E::Ne => None,
E::Na => ev!(0.548),
E::Mg => None,
E::Al => ev!(0.441),
E::Si => ev!(1.385),
E::P => ev!(0.746),
E::S => ev!(2.077),
E::Cl => ev!(3.617),
E::Ar => None,
E::K => ev!(0.501),
E::Ca => None,
E::Sc => ev!(0.188),
E::Ti => ev!(0.079),
E::V => ev!(0.525),
E::Cr => ev!(0.666),
E::Mn => None,
E::Fe => ev!(0.163),
E::Co => ev!(0.661),
E::Ni => ev!(1.156),
E::Cu => ev!(1.228),
E::Zn => None,
E::Ga => ev!(0.3),
E::Ge => ev!(1.35),
E::As => ev!(0.81),
E::Se => ev!(2.021),
E::Br => ev!(3.365),
E::Kr => None,
E::Rb => ev!(0.468),
E::Sr => None,
E::Y => ev!(0.307),
E::Zr => ev!(0.426),
E::Nb => ev!(0.893),
E::Mo => ev!(0.746),
E::Tc => ev!(0.55),
E::Ru => ev!(1.05),
E::Rh => ev!(1.137),
E::Pd => ev!(0.557),
E::Ag => ev!(1.302),
E::Cd => None,
E::In => ev!(0.3),
E::Sn => ev!(1.2),
E::Sb => ev!(1.07),
E::Te => ev!(1.971),
E::I => ev!(3.059),
E::Xe => None,
E::Cs => ev!(0.472),
E::Ba => None,
E::La => ev!(0.5),
E::Ce => ev!(0.5),
E::Pr => None,
E::Nd => None,
E::Pm => None,
E::Sm => None,
E::Eu => None,
E::Gd => None,
E::Tb => None,
E::Dy => None,
E::Ho => None,
E::Er => None,
E::Tm => None,
E::Yb => None,
E::Lu => None,
E::Hf => None,
E::Ta => ev!(0.322),
E::W => ev!(0.815),
E::Re => ev!(0.15),
E::Os => ev!(1.1),
E::Ir => ev!(1.565),
E::Pt => ev!(2.128),
E::Au => ev!(2.309),
E::Hg => None,
E::Tl => ev!(0.2),
E::Pb => ev!(0.36),
E::Bi => ev!(0.946),
E::Po => ev!(1.9),
E::At => ev!(2.8),
E::Rn => None,
E::Fr => ev!(0.47),
E::Ra => None,
E::Ac => None,
E::Th => None,
E::Pa => None,
E::U => None,
E::Np => None,
E::Pu => None,
E::Am => None,
E::Cm => None,
E::Bk => None,
E::Cf => None,
E::Es => None,
E::Fm => None,
E::Md => None,
E::No => None,
E::Lr => None,
E::Rf => None,
E::Db => None,
E::Sg => None,
E::Bh => None,
E::Hs => None,
E::Mt => None,
E::Ds => None,
E::Rg => None,
E::Cn => None,
E::Nh => None,
E::Fl => None,
E::Mc => None,
E::Lv => None,
E::Ts => None,
E::Og => None,
}
}
}