Which of the following are least reactive?

Which of the following are least reactive?

Black phosphorus is thermodynamically most stable form of phosphorus as it is a highly polymerised form of phosphorus. Hence it is least reactive.

Is Neon least reactive?

Neon is the tenth element of the periodic table and the second of the noble gases. The element is incredibly non-reactive because of its electron configuration. It has a “happy” electron orbital that is filled with eight electrons.

What makes an element reactive?

The number of electrons in the outermost shell of an atom determines its reactivity. Noble gases have low reactivity because they have full electron shells. Alkali metals are highly reactive because they readily lose the single electron in their outermost shell.

Which alkaline earth metal is most reactive with water?

Problems

• Metal oxides form basic solutions in water.
• Difluorine does not react with water.
• Beryllium has a large atomic radius.
• Sodium is the alkali element that reacts most violently with water.

Is beryllium the most reactive?

It also discusses the chemical reactivity and trends of the alkaline earth metals. Beryllium metal is relatively unreactive at room temperature, particularly in its massive form. Magnesium is more electropositive than the amphoteric beryllium and reacts more readily with most of the nonmetals.

Is beryllium flammable?

Beryllium is also classified as flammable. The United Nations classification of beryllium and beryllium compounds for the transport of dangerous goods is “poisonous substance” and, for packing, a “substance presenting medium danger”.

Why is radium so reactive?

Radium metal may be prepared by electrolytic reduction of its salts, and it displays high chemical reactivity. It is attacked by water with vigorous evolution of hydrogen and by air with the formation of the nitride. It occurs exclusively as the Ra2+ ion in all its compounds.

What are 3 uses for radium?

Radium is used in luminous paint (in the form of radium bromide). Radium and beryllium were once used as a portable source of neutrons. Radium is used in medicine to produce radon gas, used for cancer treatment.

How dangerous is plutonium?

Because it emits alpha particles, plutonium is most dangerous when inhaled. When plutonium particles are inhaled, they lodge in the lung tissue. The alpha particles can kill lung cells, which causes scarring of the lungs, leading to further lung disease and cancer.

What color is radioactive waste?

If you could see into a nuclear reactor, or some cooling ponds that hold radioactive waste, you would indeed see a blue glow. But this isn’t directly coming from the radioactive material.

Why is plutonium not found naturally?

Plutonium does occur naturally, but at very low concentrations. Indeed, it is all but unobservable, except by very sensitive modern analytical techniques. The reason that plutonium (and other transuranic elements) are so rare in nature is that being radioactive, they decay with a characteristic half-life.

Is plutonium a man-made element?

Plutonium is a radioactive metallic element with the atomic number 94. It was discovered in 1940 by scientists studying how to split atoms to make atomic bombs. Plutonium is created in a reactor when uranium atoms absorb neutrons. Nearly all plutonium is man-made.