-4
Explanation:
If a radioactive isotope undergoes alpha decay, it's mass number will change by -4.
The mass number of a nuclei is the sum of its number of protons and neutrons.
An alpha particle is similar of a helium atom:
⁴₂He
The atom above is made up of:
mass number = 4
Atomic number = 2
Number of protons = 2
Number of neutrons = 2
Number of electrons = 2
If a substance is undergoing radioactive decay, the mass number of the product will decrease by 4 and the atomic number will decrease by 2.
In nuclear equations, mass and atomic numbers are usually conserved.
learn more:
Transmutation brainly.com/question/3433940
#learnwithBrainly
Answer:
GCATTCGCGATTAAT
Explanation:
DNA is made up of structural units called nucleotides. each nucleotide consists of three components linked together by covalent bonds. These are a five-carbon sugar called deoxyribose, a phosphate group and a nitrogenous base. The organic bases are of four kinds: adenine which is complementary to thymine and guanine which is complementary to cytosine.
Answer:
what re the options for each?
Explanation:
Answer and Explanation:
D. Poultry
There are three important temperatures to remember when cooking meat or eggs at home: Eggs and all ground meats must be cooked to 160°F; poultry and fowl to 165°F; and fresh meat steaks, chops and roasts to 145°F.