Based on the periodic table, what do we now call the element mendeleev called eka-manganese?

2 answers:

8 0

Based on the periodic table, the element mendeleev called eka-manganese is now called technetium. Technetium is a silvery-gray metal that tarnishes slowly in moist air. Hope this answers the question. Have a nice day. Feel free to ask more questions.

Keith_Richards [23]3 years ago

6 0

Answer:

Technetium

Explanation:

The Mendeleev element called eka-manganese is now called Technetium.

Technetium is a crystalline, silver and radioactive metal, very similar to platinum. It serves as a gamma ray source of beta particles. Most of the technetium produced on Earth is a byproduct of uranium-235 fission in nuclear reactors and is extracted from nuclear fuel rods. No isotope of technetium has a half-life of more than 4.2 million years, so its detection in 1952 helped reinforce the theory that stars can produce heavier elements.

You might be interested in

Some elements are liquids or gases. True False

gregori [183]

The answer to this ? is true

4 0

3 years ago

What part of the earth is made up of the tectonic plates? list and describe the motion of the three types of plate boundaries?

Naddika [18.5K]

The crust
1. divergent (moves away from each other)
2. convergent (moves towards each other)
3. transform (slides past each other)

3 0

3 years ago

When the valves are opened and the gases are allowed to mix at a constant temperature, what is the distribution of atoms in each

jek_recluse [69]

Answer:

Equal number of atoms of each gas in each container

Explanation:

When the valves opened, the two contaienrs become one and the gases beging to mix by diffusion. This phenomenom is produced by the differeces of concentration of a gas between two points of the container.

The gases will continue diffunding util their concentration in both containers are equal.

7 0

2 years ago

Analyze how friction can be both a positive and negative aspect in our everyday lives. Use examples to support your statements.

3241004551 [841]

Answer:

For example, friction between our shoes and the floor stop us from slipping and friction between tyres and the road stop cars from skidding. Friction is sometimes unhelpful. For example, if you don't lubricate your bike regularly with oil, the friction in the chain and axles increases.

Explanation:

8 0

2 years ago

Waves of sound energy move ________ ___ ____ ___________ from the source.

MArishka [77]

Answer:

are there any options for us to choose from? or is it just fill in the blank

8 0

2 years ago