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san4es73 [151]
3 years ago
11

I really need to pass chem, someone please help me! <3

Chemistry
1 answer:
Soloha48 [4]3 years ago
5 0
1. Is that you need to pay more attention in class
You might be interested in
Please help me :')<br>1. D<br>2. A and D<br>3. A<br>4. C and D<br>5. B<br>6. A and B<br>7. C​
melomori [17]

Answer:

B

while in case of A with beta decay some gamma radiations also emit thus its not represent just gamma decay.

Explanation:

The equation B represent gamma decay while in case of A with beta decay some gamma radiations also emit thus its not represent just gamma decay.

The equation C represent the alpha decay because helium nuclei are emitted and equation D represent beta decay.

Alpha beta and gamma radiations are the examples of ionizing radiations. When an atom is an excited state and having high energy, the atom is in unstable state. The excess of energy is released by the atom to get the stability. The released energy is in the form of radiations which may include alpha, beta, gamma, X-ray etc.

Beta radiations:

Beta radiations are result from the beta decay in which electron is ejected. The neutron inside of the nucleus converted into the proton an thus emit the electron which is called β particle.

The mass of beta particle is smaller than the alpha particles.

They can travel in air in few meter distance.

These radiations can penetrate into the human skin.

The sheet of aluminium is used to block the beta radiation

⁴₆C → ¹⁴₇N + ⁰₋₁e

The beta radiations are emitted in this reaction. The one electron is ejected and neutron is converted into proton.

Properties of alpha radiation:

Alpha radiations are emitted as a result of radioactive decay. The atom emit the alpha particles consist of two proton and two neutrons. Which is also called helium nuclei. When atom undergoes the alpha emission the original atom convert into the atom having mass number less than 4  and atomic number less than 2 as compared to parent atom the starting atom.

Alpha radiations can travel in a short distance.

These radiations can not penetrate into the skin or clothes.

These radiations can be harmful for the human if these are inhaled.

These radiations can be stopped by a piece of paper.

₉₂U²³⁸   →   ₉₀Th²³⁴  + ₂He⁴  + energy

Gamma radiations:

Gamma radiations are high energy radiations having no mass.

These radiations are travel at the speed of light.

Gamma radiations can penetrate into the many materials.

These radiations are also used to treat the cancer.

Lead is used for the protection  against gamma radiations because of its high molecular density.

The lead apron are used by the person when treated with gamma radiations.

Lead shields are also used in the wall, windows and doors of the room where gamma radiations are treated, in-order to protect the surroundings.

7 0
3 years ago
What element has 1 energy level and 2 valence electrons
Anvisha [2.4K]

Answer: Hydrogen and helium

Explanation:

3 0
3 years ago
The temp of a star is 6000k and it’s luminosity is 1000k. What kind of star is it? A) white dwarf B) main sequence star C) giant
coldgirl [10]
Hi,


The answer is none of them.
A star with 6000k of surface temperature can only be yellow dwarf.

Hope this helps.
r3t40
4 0
3 years ago
Read 2 more answers
To what category of elements does an element belong if it is a poor conductor of electricity
Yuri [45]

I was wondering the same thing my dude

3 0
3 years ago
A chemical bond is formed between magnesium and chlorine. Describe the process and identify the nature of the chemical bond.
IRINA_888 [86]

Answer:

The answer to your question is: b

Explanation:

a. Magnesium shares an electron somewhat unevenly from its 3s orbital with the 3p orbital of chlorine producing a mildly polar covalent bond.  This option is wrong because Mg does not share electrons it loses electrons.

b. Magnesium loses and electron from the 3s and gives it up to the 3p of chlorine producing an ionic bond.  This option is correct, Mg loses one electron and Cl receives it, the bond formed between Mg and Cl is ionic.

c. Magnesium does not react chemically with chlorine because magnesium gives up electrons, but chlorine only shares electrons.  This answer is wrong, Mg and Cl react and produce MgCl₂.

d. Magnesium shares an electron from the 3s orbital with the 3p orbital of chlorine producing a covalent bond. Mg does not share electrons and is not able to produce covalent bonds.

7 0
3 years ago
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