Elements please help?

Question

U and Pu are named for objects in nature. What are these objects, and what other element is named after a similar object?

Answer 1

U = Uranium from planet Uranus
Pu = Plutonium from planet Pluto

So these objects are planets. Mercury Hg is your last planet and also an element hehe.

Answer 2

U=uranium(is highly Radioactive)And is named after Uranus.
Uranium is a very heavy (dense) metal which can be used as an abundant source of concentrated energy.

It occurs in most rocks in concentrations of 2 to 4 parts per million and is as common in the Earth's crust as tin, tungsten and molybdenum. It occurs in seawater, and could be recovered from the oceans if prices rose significantly.

It was discovered in 1789 by Martin Klaproth, a German chemist, in the mineral called pitchblende. It was named after the planet Uranus, which had been discovered eight years earlier.

Uranium was apparently formed in super novae about 6.6 billion years ago. While it is not common in the solar system, today its slow radioactive decay provides the main source of heat inside the earth, causing convection and continental drift.

The high density of uranium means that it also finds uses in the keels of yachts and as counterweights for aircraft control surfaces (rudders and elevators), as well as for radiation shielding.

Its melting point is 1132°C. The chemical symbol for uranium is U.

Pu=plutonium
Plutonium was the second transuranium element of the actinide series to be discovered. By far of greatest importance is the isotope 239Pu, which has a half-life of more than 20000 years. One kilogram is equivalent to about 22 million kilowatt hours of heat energy. The complete detonation of a kilogram of plutonium produces an explosion equal to about 20000 tons of chemical explosive. The various nuclear applications of plutonium are well known. The isotope 233Pu was used in the American Apollo lunar missions to power seismic and other equipment on the lunar surface. Plutonium contamination is an emotive environmental problem.

Answer 3

Splinter missed Neptunium (Np)