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14.04.2022

What is the state of iodine at 25 degrees C

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20.04.2022, solved by verified expert

Bhaskar Singh Bora

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Answer:

Iodine is a chemical element with the symbol I and atomic number 53. The heaviest of the stable halogens, it exists as a semi-lustrous, non-metallic solid at standard conditions that melts to form a deep violet liquid at 114 degrees Celsius, and boils to a violet gas at 184 degrees Celsius.

So, room temperature is usually taken as being 25°C. At this temperature, fluorine and chlorine are gases, bromine is a liquid, and iodine and astatine are solids.

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Chemistry

Between HClO3 and HIO3, which is stronger and why? Question 16 options: 1) HClO3 is stronger because chlorine is in a higher oxidation state than iodine. 2) HClO3 is stronger because chlorine is more electronegative than iodine. 3) HIO3 is stronger because iodine is in a higher oxidation state than chlorine. 4) HIO3 is stronger because iodine is less electronegative than chlorine.

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P Answered by PhD

HClO3 is stronger than HIO3 because chlorine is more electronegative than iodine.

Chloric acid (HClO3) is more stronger than Iodic acid (HIO3) because chlorine is more electronegative than iodine. As we go from top to bottom in the periodic table, the atomic size increases and electronegativity decreases.

Electronegativity is the ability of an atom to attract electron pair towards itself. Chlorine atom comes on the top whereas iodine is present lower than chlorine in the periodic table so the atomic size of chlorine is smaller and higher value of electronegativity as compared to iodine so we can conclude that Chloric acid (HClO3) is more stronger than Iodic acid (HIO3).

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Chemistry

Between HClO3 and HIO3, which is stronger and why? Question 16 options: 1) HClO3 is stronger because chlorine is in a higher oxidation state than iodine. 2) HClO3 is stronger because chlorine is more electronegative than iodine. 3) HIO3 is stronger because iodine is in a higher oxidation state than chlorine. 4) HIO3 is stronger because iodine is less electronegative than chlorine.

Step-by-step answer

P Answered by PhD

HClO3 is stronger than HIO3 because chlorine is more electronegative than iodine.

Chloric acid (HClO3) is more stronger than Iodic acid (HIO3) because chlorine is more electronegative than iodine. As we go from top to bottom in the periodic table, the atomic size increases and electronegativity decreases.

Electronegativity is the ability of an atom to attract electron pair towards itself. Chlorine atom comes on the top whereas iodine is present lower than chlorine in the periodic table so the atomic size of chlorine is smaller and higher value of electronegativity as compared to iodine so we can conclude that Chloric acid (HClO3) is more stronger than Iodic acid (HIO3).

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Chemistry

After electrolyzing aqueous zinc iodide (zni2), what state is iodine in - solid, liquid, or gas?

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P Answered by PhD

2

After electrolysing ZnI2, iodine crystals are formed, therefore, the answer is solid.

Chemistry

After electrolyzing aqueous zinc iodide (zni2), what state is iodine in - solid, liquid, or gas?

Step-by-step answer

P Answered by PhD

2

After electrolysing ZnI2, iodine crystals are formed, therefore, the answer is solid.

Physics

While developing his periodic table, dmitri mendeleev broke his own rule and placed the element tellurium before iodine in the group. he did this even though tellurium s atomic mass was known to be greater than iodine s. in his notes, mendeleev stated that he expected tellurium to have a lower atomic mass than iodine. however, all measurements continue to show that tellurium has a greater atomic mass than iodine even though tellurium acts like it has a lower atomic mass. what is the most likely reason that mendeleev placed tellurium before iodine?

Step-by-step answer

P Answered by PhD

15

Mendeleev observed that tellurium has chemical properties like other elements in its group, and he did not know that neutrons cause the greater atomic mass.

Explanation:

Neutrons were discovered after Mendeleev's death, so for him order the elements by atomic mass was equivalent to order them by atomic number. It was correct that tellurium goes before iodine, because tellurium has a lower atomic number than iodine, even though it has a greater atomic mass.

Physics

While developing his periodic table, dmitri mendeleev broke his own rule and placed the element tellurium before iodine in the group. he did this even though tellurium s atomic mass was known to be greater than iodine s. in his notes, mendeleev stated that he expected tellurium to have a lower atomic mass than iodine. however, all measurements continue to show that tellurium has a greater atomic mass than iodine even though tellurium acts like it has a lower atomic mass. what is the most likely reason that mendeleev placed tellurium before iodine?

Step-by-step answer

P Answered by PhD

15

Mendeleev observed that tellurium has chemical properties like other elements in its group, and he did not know that neutrons cause the greater atomic mass.

Explanation:

Neutrons were discovered after Mendeleev's death, so for him order the elements by atomic mass was equivalent to order them by atomic number. It was correct that tellurium goes before iodine, because tellurium has a lower atomic number than iodine, even though it has a greater atomic mass.

Chemistry

) Iodine-125 emits gamma rays and has a half life of 60 days. If a 20 mg pellet of iodine-125 is implanted into a prostate gland, how much I-125 remains after 1 year

Step-by-step answer

P Answered by PhD

0.3 mg

Explanation:

From

N/No = (1/2)^t/t1/2

N= mass of isotope left after 1 year

No= initial mass of isotope present

t= time elapsed

t1/2 = half life of the isotope

N/20 = (1/2)^365/60

N/20 = (1/2)^6

N= (1/2)^6 × 20

N= 0.3 mg

Chemistry

) Iodine-125 emits gamma rays and has a half life of 60 days. If a 20 mg pellet of iodine-125 is implanted into a prostate gland, how much I-125 remains after 1 year

Step-by-step answer

P Answered by PhD

0.3 mg

Explanation:

From

N/No = (1/2)^t/t1/2

N= mass of isotope left after 1 year

No= initial mass of isotope present

t= time elapsed

t1/2 = half life of the isotope

N/20 = (1/2)^365/60

N/20 = (1/2)^6

N= (1/2)^6 × 20

N= 0.3 mg

Chemistry

12 3 4 5 6 7 8 9 10time remaining52: 51while developing his periodic table, dmitri mendeleev broke his own rule and placed the element tellurium before iodine in the group. he did this even though tellurium s atomic mass was known to be greater than iodine s. in his notes, mendeleev stated that he expected tellurium to have a lower atomic mass than iodine. however, all measurements continue to show that tellurium has a greater atomic mass than iodine even though tellurium acts like it has a lower atomic mass what is the most likely reason that

Step-by-step answer

P Answered by PhD

3

The answer is A. or Mendeleev observed that tellurium has chemical properties like other elements in its group, and he did not know that neutrons cause the greater atomic mass.

Explanation: This one makes the most sense and also I got a 100% on my quiz.

HOPE THIS HELPS!!!

Physics

While developing his periodic table, dmitri mendeleev broke his own rule and placed the element tellurium before iodine in the group. he did this even though tellurium s atomic mass was known to be greater than iodine s. in his notes, mendeleev stated that he expected tellurium to have a lower atomic mass than iodine. however, all measurements continue to show that tellurium has a greater atomic mass than iodine even though tellurium acts like it has a lower atomic mass. what is the most likely reason that mendeleev placed tellurium before iodine?

Step-by-step answer

P Answered by PhD

284

The most likely reason that Mendeleev placed tellurium before iodine is Mendeleev observed that tellurium has chemical properties like other elements in its group, and he did not know that neutrons cause the greater atomic mass.

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