What is yttrium used for?
Yttrium is often used as an additive in alloys. It increases the strength of aluminium and magnesium alloys. It is also used in the making of microwave filters for radar and has been used as a catalyst in ethene polymerisation. Yttrium-aluminium garnet (YAG) is used in lasers that can cut through metals.
How many neutrons does yttrium 92 have?
50
Name | Yttrium |
---|---|
Atomic Mass | 88.90585 atomic mass units |
Number of Protons | 39 |
Number of Neutrons | 50 |
Number of Electrons | 39 |
Is yttrium harmful to humans?
Water soluble compounds of yttrium are considered mildly toxic, while its insoluble compounds are non-toxic. Exposure to yttrium compounds in humans may cause lung disease.
What is yttrium atomic number?
39
Yttrium/Atomic number
The atomic number 39 is written in digital numbers to represent that yttrium oxide is important in micro-wave ovens, where with iron, is used as microwave-filters.
Is yttrium rare?
Yttrium is also one of the rare-earth elements. Despite their name, rare-earth elements are rather plentiful around the world. The 17 rare-earth elements include yttrium, scandium and 15 lanthanides (the metallic elements with atomic numbers 57 through 71).
What can destroy yttrium?
Water reacts with yttrium and its compounds to create hydrogen gas and Y2O3. Concentrated nitric and hydrofluoric acids do not rapidly destroy yttrium, but other stronger acids do.
Is yttrium a rare earth element?
The rare earth elements (REE) are a set of seventeen metallic elements. These include the fifteen lanthanides on the periodic table plus scandium and yttrium.
What element has 70 neutrons?
Ytterbium –
#70 – Ytterbium – Yb.
Is yttrium a rare-earth element?
What is an interesting fact about yttrium?
Yttrium: Yttrium is a soft silver-metallic element. Fun fact about Yttrium: Yttrium is named after the Swedish village of Ytterby, which has a nearby quarry containing quartz and feldspar, among other minerals. Chemical symbol: Y. Atomic number: 39.
What elements are named after scientists?
Many elements were named after famous scientists. Some of the best-known elements include einsteinium (Albert Einstein), curium (Marie and Pierre Curie), rutherfordium (Ernest Rutherford), nobelium (Alfred Nobel), and mendelevium (Dmitri Mendeleev).
What is the meaning of chemical element?
Chemical element, also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed.
What is the hazard ratio for the yttrium-90?
The study is designed to detect a 2.5-month increase in median progression-free survival, from 6 months in the control group to 8.5 months in the TARE group (hazard ratio [HR] 0.71), and a 3.5-month increase in median hepatic progression-free survival time, from 6.5 months in the control group to 10 months in the TARE group (HR 0.65).
How many patients are in the yttrium-90 clinical trial?
The study is an adaptive trial, comprising a group sequential design with 2 interim analyses with a planned maximum of 420 patients.
Which is the parent isotope of yttrium 90 y?
90 Y exists in equilibrium with its parent isotope strontium -90, which is a product of nuclear fission . ^ mY – Excited nuclear isomer.
When did TheraSphere yttrium 90 phase 1 results come out?
Results: Patient enrollment ended in October 2018. The first interim analysis in June 2018 resulted in continuation of the study without any changes.