Our world is a vast reservoir of material elements that are indispensable in sustaining life here on
carth. Some were discovered in the hope of addressing man's quest for a better life. These elements were
carefully listed down in what we call periodic table of elements
.
Last year 2019, our modern periodic table celebrated its 150th birthday and was also declared as the
International Year of the Periodic Table by the United Nations. Such a great journey creating an inventory
list of universe's fragments into a systematic compilation that includes the new synthetic elements like the
following:
1. Californium, CF-252 is used to treat some cervical and brain cancers.
2. Different isotopes of technetium are used in hospital around the world. Technetium-99m has a lot of uses
for medical purposes such as imaging the skeleton and heart muscle, and for thyroid, brain, lungs liver,
spleen, kidney gall bladder, bone marrow, salivary and lacrimal glands, heart blood pool, infection, and
many specialized medical studies. Technetium-99m is used in diagnostic imaging as a radioactive tracer that
can be detected in the body by medical equipment, such as gamma cameras
3. Uranium is used in nuclear power plant for generating clean energy. While other fuels, such as plutonium
and thorium, are also being considered useful
These are only some of the useful synthetic elements. Can you name a few
that have proven their roles in our times today?
Answers
Answer:
150 years ago, Mendeleev perceived the relationships of the chemical elements
Dimitri Mendeleev
REVOLUTIONARY Russian chemist Dmitrii Mendeleev (shown around 1880) was the first to publish a periodic table, which put the known elements into a logical order and left room for elements not yet discovered.
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By Tom Siegfried
JANUARY 8, 2019 AT 12:29 PM
Every field of science has its favorite anniversary.
For physics, it’s Newton’s Principia of 1687, the book that introduced the laws of motion and gravity. Biology celebrates Darwin’s On the Origin of Species (1859) along with his birthday (1809). Astronomy fans commemorate 1543, when Copernicus placed the sun at the center of the solar system.
And for chemistry, no cause for celebration surpasses the origin of the periodic table of the elements, created 150 years ago this March by the Russian chemist Dmitrii Ivanovich Mendeleev.
Mendeleev’s table has become as familiar to chemistry students as spreadsheets are to accountants. It summarizes an entire science in 100 or so squares containing symbols and numbers. It enumerates the elements that compose all earthly substances, arranged so as to reveal patterns in their properties, guiding the pursuit of chemical research both in theory and in practice.