period 5 element造句

例句与造句

1. Rubidium is the first of the Period 5 elements, and exactly halfway down that row is the element Rhodium.
2. It is an alkali metal, the most reactive group in the periodic table, having properties and similarities with both other alkali metals and other period 5 elements.
3. For example, rubidium has 5 electron shells, a property found in all other period 5 elements, whereas its electron configuration's ending is similar to all other alkali metals : s 1.
4. The existence of spectral lines from the period 5 element Technetium ( Tc ) is also expected as a result of the s-process neutron capture, but a substantial fraction of S stars show no sign of Tc.
5. So I suggest the section start like this : " Heavy metals don't have basic functions in living organisms, but some period 4 metals are trace essential elements, with iron used for hemoglobin in blood, zinc for X, Y for A, Z for B, etc . Heavier metals are rarely important for living organisms : of all period 5 elements, molybdenum is essential for humans [ and I don't know if any other period 5 elements are used by organisms for anything ].
6. It's difficult to find period 5 element in a sentence. 用period 5 element造句挺难的
7. So I suggest the section start like this : " Heavy metals don't have basic functions in living organisms, but some period 4 metals are trace essential elements, with iron used for hemoglobin in blood, zinc for X, Y for A, Z for B, etc . Heavier metals are rarely important for living organisms : of all period 5 elements, molybdenum is essential for humans [ and I don't know if any other period 5 elements are used by organisms for anything ].