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nlexa [21]
3 years ago
11

Which nuclei is not radioactive? A. Am-241 B. Mg-24 C. Pu-241 D. U-238

Physics
1 answer:
Helen [10]3 years ago
6 0

Hello!

Which nuclei is NOT radioactive?

A) Am-241 B) Mg-24 C) Pu-241 D) U-238

Solving:

It is noteworthy that chemical elements located on the periodic table in the lanthanide and actinide groups are radioactive.  

Am-241 (americium) belongs to the group of actinides and is a heavy and radioactive metal.  

Mg-24 (magnesium) is an essential element for the body, mainly for the nervous system, in addition to synthesizing proteins and serves for hormonal control, belongs to the group of alkaline earth metals and is a non-radioactive nucleus.

Pu-241 (plutonium) is an element that is isotope of fission by plutonium, belongs to the group of actinides and is a heavy and radioactive metal.  

U-238 (uranium) is an element that is isotope of non-fission uranium, belongs to the group of actinides and is a heavy and radioactive metal.

Answer:

B) Mg-24

_______________________

I Hope this helps, greetings ... Dexteright02! =)

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Difference between object distance and image distance within 4 points .(class 10)​
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The relationship between object distance, image distance, and focal length of a spherical mirror is given by

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3 years ago
Red light of wavelength 633 nm from a helium-neon laser passes through a slit 0.370 mm wide. The diffraction pattern is observed
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Answer:

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Explanation:

We can use the Young's Double Slit Experiment Formula here:

\Delta x = \frac{\lambda L}{d}\\\\

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λ = wavelength of light = 633 nm = 6.33 x 10⁻⁷ m

L = distance between screen and slit = 3.7 m

d = slit width = 0.37 mm = 3.7 x 10⁻⁴ m

Therefore,

\Delta x = \frac{(6.33\ x\ 10^{-7}\ m)(3.7\ m)}{3.7\ x \ 10^{-4}\ m}

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8 0
3 years ago
Dez pours water (n 1.333) into a container made of crown glass (n 1.52). The light ray in ner made of crown glass (n = 1.52). Th
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Answer:

The angle of the corresponding refracted ray is 34.84°

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n_{i}\sin i=n_{r}\sin r

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\sin r=\dfrac{n_{i}\sin i}{n_{r}}

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Hence, The angle of the corresponding refracted ray is 34.84°

8 0
4 years ago
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