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Lead is used in building construction, lead-acid batteries, bullets and shots, weights, as part of solders, pewters, fusible alloys and as a radiation shield. Lead has the highest atomic number of all of the stable elements, although the next higher element, bismuth, has a half-life that is so long (much longer than the age of the universe) that it can be considered stable. Its four stable isotopes have 82 protons, a magic number in the nuclear shell model of atomic nuclei.
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When was zinc first used by humans?
1746 it was invented by Luigi Galvini
Who were the first humans to live in Australia?
The first humans to live in Australia were the Aborigines.
Why is an ozone hole dangerous to humans?
Yes, ozone hole is dangerous to humans. Ozone hole would lead people expose to UV rays which are harmful.
Which is most often used in magnets aluminum or lead?
Lead
What do we use lead for?
Lead is actually used as a sound absorber
Who was the first person to discover lead?
Lead has been used by humans for thousands of years, especially by the Romans who used it extensively for pipes for the transportation of fresh water into the city of Rome. They also used lead pots for cooking, not realising they were poisoning themselves in the process.
What lead to the first human migration into Europe?
Humans don't migrate, but they were following the herds.
Who was the first computer used?
humans
What was the first method humans used to investgate flight?
Kites invented by the Chinese were the first devised that humans used to investigate flight.
Why is carbon used in a pencil?
Because lead used to be used, and that was poisonous to humans, graphite is actually the name of what's used now.
What is used for x-ray sheilds?
Lead, usually in the form of a vest when dealing with humans.
Where did archaeologist's find what may have been the first tools used by humans?
where did archaeologists find what may have been the first tools used by humans
Who was the person who discovered lead?
Lead has been used by humans for thousands of years, especially by the Romans who used it extensively for pipes for the transportation of fresh water into the city of Rome. They also used lead pots for cooking, not realising they were poisoning themselves in the process.
When was wood first used by humans?
As wood was already in use by our pre-human ancestors, wood has always been used by humans since we first evolved.
What element is used to shield humans from radioactivity?
Usually lead (Pb) because it is a cheap heavy metal.
Where did archaeologists find what may have been the first tools by humans?
where did archaeologists find what may have been the first tools used by humans
What is the Lethal dose of lead to humans?
The lethal dose of lead to humans has been reported to be approximately 450 mg/kg of lead. Testing was done using lead acetate.
