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07/15/2021

What are the monatomic elements?

What are the monatomic elements?

Monatomic or monoatomic elements are elements that are stable as single atoms….The noble gases exist as monatomic elements:helium (He)neon (Ne)argon (Ar)krypton (Kr)xenon (Xe)radon (Rn)oganesson (Og)

Which gas is Monatomic at room temperature and pressure?

The only chemical elements that are stable single atom molecules at standard temperature and pressure (STP) are the noble gases. These are helium, neon, argon, krypton, xenon, and radon.

Which gas is liquid at room temperature?

At this temperature and ordinary pressure, only two elements are liquids: Bromine. Mercury.

Is carbon a monatomic element?

On the basis of atomicity, molecules can be classified as : Monoatomic-composed of 1 atom e.g. He, Ne, Ar (all noble gases are monoatomic) Diatomic-composed of 2 atoms e.g. H2 , N2 , O. Triatomic-composed of 3 atoms e.g. O….Examples.Atomic NumberElementAtomicity6Carbon17Nitrogen28Oxygen29Fluorine229

Is Iodine a Monatomic?

The noble gases (helium, neon, argon, krypton, xenon, and radon) are also gases at STP, but they are monatomic. At slightly elevated temperatures, the halogens bromine (Br2) and iodine (I2) also form diatomic gases.

Is iodine gas toxic?

Iodine vapor is intensely irritating to mucous membranes and adversely affects the upper and lower respiratory system (6) Inhalation of iodine vapor leads to excessive flow of tears, tightness in the chest, sore throat and headache.

What happens when iodine is exposed to light?

Iodine Test A solution of iodine (I2) and potassium iodide (KI) in water has a light orange-brown color. If it is added to a sample that contains starch, such as the bread pictured above, the color changes to a deep blue.

What iodine is used for?

Iodine is used to treat and prevent iodine deficiency and as an antiseptic. For iodine deficiency it can be given by mouth or injection into a muscle. As an antiseptic it may be used on wounds that are wet or to disinfect the skin before surgery.

Why has iodine been banned?

Iodine, for many years used by walkers and mountaineers to disinfect water, will be banned in the European Union from autumn. The main risks from drinking untreated water come from bacteria, viruses and parasites such as giardia and cryptosporidium.

What are the symptoms of low iodine?

What are the signs of iodine deficiency?fatigue.increased sensitivity to cold.constipation.dry skin.weight gain.puffy face.muscle weakness.elevated blood cholesterol levels.

Is it safe to take iodine daily?

Iodine is POSSIBLY UNSAFE when taken by mouth in high doses. Do not take more than 1100 mcg of iodine per day if you are over 18 years old; do not take more than 900 mcg of iodine per day if you are 14 to 18 years old. Higher intake has been shown to cause thyroid problems in the newborn in some cases.

What are the symptoms of too much iodine?

As a result, the thyroid gland enlarges, forming a goiter. (Goiters can form when the thyroid gland is underactive or overactive.) If people consume very large amounts of iodine, they may have a brassy taste in their mouth and produce more saliva. Iodine can irritate the digestive tract and cause a rash.

How many drops of Lugol’s iodine should I take a day?

Adults, teenagers, and children—3 to 5 drops (approximately 0.1 to 0.3 mL) three times a day for ten days before surgery. This medicine is usually given along with your antithyroid medicine.

Which disease is caused due to deficiency of iodine?

Worldwide, iodine deficiency is the most common cause of thyroid enlargement and goiter (see goiter brochure). Within a goiter, nodules can develop. Patients with a large goiter may experience symptoms of choking, especially when lying down, and difficulty swallowing and breathing.

What foods are rich in iodine?

Fish (such as cod and tuna), seaweed, shrimp, and other seafood, which are generally rich in iodine. Dairy products (such as milk, yogurt, and cheese), which are major sources of iodine in American diets. Iodized salt, which is readily available in the United States and many other countries*

How much iodine do we need daily?

Adults need 140 micrograms (μg) of iodine a day. Most people should be able to get all the iodine they need by eating a varied and balanced diet.