Which of the following isotopes would most likely be unstable and therefore radioactive?helium-3
calcium-40
molybdenum-98
mercury-194

Answers

Answer 1

Answer:

The "mercury-194" is a kind of isotope which is untastable and radioactive.

What is isotope?

Isotopes may be members of the very same element's family but also have variable counts of neutrons despite roughly the identical count of protons.

What is radioactive?

An unstable nucleus of an atom releases energy through radiation in a process known as radioactive decay.

Therefore, the "mercury-194" is a kind of isotope which is untastable and radioactive.

To know more about isotope and radioactive

brainly.com/question/1770619

#SPJ2

Answer 2

Answer:

Answer: Mercury-194 is an unstable isotope and hence is radioactive.

Explanation: Mercury-194 is an isotope of mercury, having formula $_(80)^(194)\textrm{Hg}$

Number of protons in this isotope = 80

Number of neutrons in this isotope = 114

This isotope is radioactive in nature and under decay process by Electron Capture.

Electron capture reactions are the reactions in which a proton in a nucleus absorbs an electron and convert it into neutron. The resulting nucleus will have a decreased atomic number and same atomic mass.

Reaction for electron capture of mercury-194 follows:

$_(80)^(194)\textrm{Hg}+_(-1)^0\textrm{e}\rightarrow _(79)^(194)\textrm{Au}$

Related Questions

Which of the following elements is not a metalloid?A. boron B. sulfur C. silicon D. arsenic
Compounds that are formed when two or more atoms combine to form molecules are called?
What can the arrow in a chemical reaction be translated to mean?
Leutium-176 has a half-life of 3.85 mc012-1.jpg 1010 years. After 1.155 mc012-2.jpg 1011 years, how much leutium-176 will remain from an original 16.8-g sample?2.10 g 3.00 g 5.56 g 8.40 g
In what way did alchemists contribute to the development of modern chemistry?a. explained changes to matter in mystical, philosophical, or religious terms b. created models of the internal structure of atoms c. used experiments to analyze the relationship between gas pressure and volume d. developed practical equipment, new procedures, and methods of identifying unknown substances

An atom with an equal number of electrons and protons has no _________.A. reactivity
B. weight
C. charge

Answers

The answer would be C. charge because the protons, which are positively charged particles, and the electrons, negatively charged particles, balance each other out and the atom becomes of a neutral charge (or no charge)

32 What is the overall charge of an ion that has 12 protons, 10 electrons, and 14 neutrons?(1) 2- (3) 4
(2) 2+ (4) 4+

Answers

The charge of a proton is +1, of an electron is -1, and of a neutron is 0.

12*(+1) +10*(-1) +14*0
= 12 -10
= +2

The correct answer is (2) +2.

Hope this would help~

protons have a 1+ charge
Electrons have a 1- charge
So 12-10 is 2+

Unsaturated hydrocarbons react very slowly with bromine. true false

Answers

False.Alkenes or alkynes (unsaturated hydrocarbons) are susceptible toelectrophilic attack by electrophiles, resulting in electrophilicaddition reactions.

Which force holds the nucleus of an atom together?A. Strong nuclear force
B. Weak nuclear force
C. Electrostatic force
D. Gravity

Answers

Answer:

Strong nuclear force

Which element (Na or Cl) is more likely to steal an outer electron from the other?

Answers

Answer:

Cl is more likely to than Na

Explanation:

The question asks for the element more take up an electron from the other

The ability of an atom to take take or give electrons in a chemical reaction, depends on its electron affinity and ionization energy, respectively

Chlorine, Cl, has the highest electron affinity in the periodic table which makes it attract electrons more towards itself

Sodium, Na, has a low ionization energy (about 2/5 of that of chlorine) than chlorine, Cl, making sodium more readily able to give its valence electron in a reaction

Therefore, Cl is more likely to take up an outer electron from Na.

How many moles are in 11.82 grams of gold?