<sod>| colspan=20 style="font-size:90%; padding-right:10px; padding-left:10px; text-align:left"|This table shows the number of heavy metal criteria met by each metal, out of the ten criteria listed in this section i.e. two based on [[density]], three on [[atomic weight]], two on [[atomic number]], and three on chemical behaviour.{{#tag:ref|These criteria are: (1) density > 3.5&nbsp;g/cm<sup>3</sup>; (2) > 7&nbsp;g/cm<sup>3</sup>; (3) atomic weight > Na (22.98); (4) > 40 (excluding s- and f-block metals, hence starting with Sc); (5) > 200; (6) atomic number > 20; (7) ditto, capped at 92; (8) metals detected by the US Pharmacopeia test for heavy metals; (9) transition and post-transition metals; and (10) class B and borderline metals in biochemistry.|group=n}} It illustrates the lack of agreement surrounding the concept, with the possible exception of [[mercury (element)|mercury]], [[lead]] and [[bismuth]].{{#tag:ref| Criteria used were ''density:''<ref name="Duffus798" /> (1) above 3.5&nbsp;g/cm<sup>3</sup>; (2) above 7&nbsp;g/cm<sup>3</sup>; ''atomic weight:'' (3) > 22.98;<ref name="Duffus798" /> (4) > 40 (excluding [[s-block|s-]] and [[f-block]] metals);<ref name="Rand" /> (5) > 200;<ref name="Baldwin" /> ''atomic number:'' (6) > 20; (7) 21–92;<ref name="Lyman" /> ''chemical behaviour:'' (8) United States Pharmacopeia;<ref name="USP" /><ref name="Raghuram" /><ref name="Thorne" /> (9) Hawkes' periodic table based definition (excluding the [[lanthanide]]s and [[actinide]]s);<ref name="Hawkes" /> and (10) Nieboer and Richardson's biochemical classifications.<ref name="Nieboer 1980 4">{{harvnb|Nieboer|Richardson|1980|p=4}}</ref> Densities of the elements are mainly from Emsley.<ref>{{harvnb|Emsley|2011}}</ref> Predicted densities have been used for [[astatine|At]], [[francium|Fr]] and elements [[fermium|100]]–[[ununseptium|117]].<ref name="HoffBon">{{harvnb|Hoffman|Lee|Pershina|2011|pp=1691,1723}}; {{harvnb|Bonchev|Kamenska|1981|p=1182}}</ref> Indicative densities were derived for [[fermium|Fm]], [[mendelevium|Md]], [[nobelium|No]] and [[lawrencium|Lr]] based on their atomic weights, estimated [[metallic radius|metallic radii]],<ref>{{harvnb|Silva|2010|pp=1628, 1635, 1639, 1644}}</ref> and predicted [[close-packing of equal spheres|close-packed]] crystalline structures.<ref>{{harvnb|Fournier|1976|p=243}}</ref> Atomic weights are from Emsley.<ref>{{harvnb|Emsley|2011}}, inside back cover</ref>| group=n}}<br /><eod>
<sod>| colspan=20 style="font-size:90%; padding-right:10px; padding-left:10px; text-align:left"|This table shows the number of heavy metal criteria met by each metal, out of the ten criteria listed in this section i.e. two based on [[density]], three on [[atomic weight]], two on [[atomic number]], and three on chemical behaviour.{{#tag:ref| Criteria used were ''density:''<ref name="Duffus798" /> (1) above 3.5&nbsp;g/cm<sup>3</sup>; (2) above 7&nbsp;g/cm<sup>3</sup>; ''atomic weight:'' (3) > 22.98;<ref name="Duffus798" /> (4) > 40 (excluding [[s-block|s-]] and [[f-block]] metals);<ref name="Rand" /> (5) > 200;<ref name="Baldwin" /> ''atomic number:'' (6) > 20; (7) 21–92;<ref name="Lyman" /> ''chemical behaviour:'' (8) United States Pharmacopeia;<ref name="USP" /><ref name="Raghuram" /><ref name="Thorne" /> (9) Hawkes' periodic table based definition (excluding the [[lanthanide]]s and [[actinide]]s);<ref name="Hawkes" /> and (10) Nieboer and Richardson's biochemical classifications.<ref name="Nieboer 1980 4">{{harvnb|Nieboer|Richardson|1980|p=4}}</ref> Densities of the elements are mainly from Emsley.<ref>{{harvnb|Emsley|2011}}</ref> Predicted densities have been used for [[astatine|At]], [[francium|Fr]] and elements [[fermium|100]]–[[ununseptium|117]].<ref name="HoffBon">{{harvnb|Hoffman|Lee|Pershina|2011|pp=1691,1723}}; {{harvnb|Bonchev|Kamenska|1981|p=1182}}</ref> Indicative densities were derived for [[fermium|Fm]], [[mendelevium|Md]], [[nobelium|No]] and [[lawrencium|Lr]] based on their atomic weights, estimated [[metallic radius|metallic radii]],<ref>{{harvnb|Silva|2010|pp=1628, 1635, 1639, 1644}}</ref> and predicted [[close-packing of equal spheres|close-packed]] crystalline structures.<ref>{{harvnb|Fournier|1976|p=243}}</ref> Atomic weights are from Emsley.<ref>{{harvnb|Emsley|2011}}, inside back cover</ref>| group=n}} It illustrates the lack of agreement surrounding the concept, with the possible exception of [[mercury (element)|mercury]], [[lead]] and [[bismuth]].<br/><eod>