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Jobisdone [24]
2 years ago
8

The first radioisotope to be put to use medically was iodine-131.

Chemistry
1 answer:
densk [106]2 years ago
6 0
The first radioisotope to be put to use medically was iodine-131 is True. It was discovered in 1938 by Glenn Seaborg and John Livingood. It is linked to medical diagnosis and treatments, natural gas production and nuclear energy. 
<span>The following statement: "Proponents of nuclear energy believe that it is a safer, cleaner, and more efficient way of making electricity than coal-fired power plants" is True.  Nuclear energy is energy that is stored in the nucleus of an atom. It is used in the generation of electricity. </span>
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Which statement describes why sodium reacts more vigorously than magnesium to hydrochloric acid? Refer to the periodic table. Ci
lions [1.4K]

Sodium has a lower ionization energy than magnesium describes why sodium reacts vigorously than magnesium chloride.

<h3>Why is sodium more reactive than magnesium?</h3>
  • Sodium is more reactive than magnesium because it has the ability to easily lose electron, hence have lower ionization energy.
  • Sodium belong to group one on the periodic table and they are called akali metal while magnesium belong to group two on the periodic table and they are called alkali Earth metal.

  • Sodium and magnesium belong to the in the 3rd period. Iin the outermost energy level sodium has one electron but magnesium has 2 electrons. Therefore, there is more attraction abetween the nucleus and electrons in magnesium than that of sodium.

Therefore, sodium is more reactive than magnesium chloride because of lower ionization energy.

For more details on sodium reactivity, check the link below.

brainly.com/question/6837593

8 0
2 years ago
Read 2 more answers
As you go down a family or group on the periodic table *
pickupchik [31]

Answer:

The elements become less reactive.

Explanation:

As we move from left to right across the periodic table the number of valance electrons in an atom increase. The atomic size tend to decrease in same period of periodic table because the electrons are added with in the same shell. When the electron are added, at the same time protons are also added in the nucleus. The positive charge is going to increase and this charge is greater in effect than the charge of electrons. This effect lead to the greater nuclear attraction and reactivity increases because of greater electron affinity.

As we move down the group atomic radii increased with increase of atomic number. The addition of electron in next level cause the atomic radii to increased. The hold of nucleus on valance shell become weaker because of shielding of electrons thus size of atom increased. The electron affinity decreases because of shielding effect and thus atom become less reactive.

7 0
2 years ago
As ice melts and changes from solid to liquid, A) entropy increases. B) kinetic energy decreases. C) an exothermic reaction occu
Mazyrski [523]

Answer:

C) Because it gets hotter

3 0
3 years ago
What volume is equivalent to 12.0 m^3?
anzhelika [568]

1.2 x 10^10 mm^3 is equivalent to 12.0 m^3

8 0
2 years ago
When HBr is added to pure water, HBr molecules lose protons, while water molecules gain protons. In this reaction, HBr is a(n)
Stells [14]
Acid Sorry if I am wrong but I am pretty positive it’s acid
3 0
2 years ago
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