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Harlamova29_29 [7]
3 years ago
6

When a non metal gains or shares by two electrons,its valency will be​

Chemistry
2 answers:
Assoli18 [71]3 years ago
8 0

When a non metal gains or share by two electrons then the valency will be 2^- or 2^+

Helen [10]3 years ago
6 0
As electrons are negatively charged particles, if it loses 2 electrons, there will be more protons than electrons by 2, therefore the valency will be 2+. If it gains 2 electrons, there will be more electrons than protons by 2, therefore the valency in this case will be 2-.
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Which of the following is unchanged at the end of the CNO cycle?
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Answer:

The correct option is: A. carbon-12

Explanation:

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This cycle involves the fusion of four protons with carbon (_{6}^{12}\textrm{C}), nitrogen isotope (_{7}^{13}\textrm{N}), and oxygen isotope (_{8}^{15}\textrm{O}), to give an alpha particle and two electron neutrinos and positrons.

The reaction involves the regeneration of carbon (_{6}^{12}\textrm{C}) nucleus in the last step.

_{6}^{12}\textrm{C} → _{7}^{13}\textrm{N} → _{6}^{13}\textrm{C} → _{7}^{14}\textrm{N} → _{8}^{15}\textrm{O} → _{7}^{15}\textrm{N} → _{6}^{12}\textrm{C}

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How is atomic number different from mass number?
Nimfa-mama [501]
Hello Gary My Man!

Well, as you can clearly see 

<span>The atomic number of an element is basically the number of protons it has. So yes, for every element this is different. Now, the mass number of an element as known, is the number of protons+the number of neutrons.  So theoretically as we can see, this number should be a whole number, but since there are different isotopes (atoms of the same element with different numbers of neutrons) of each element, most periodic tables take account of that, so they often include decimals as seen. 

So in Short, ALL</span> the atoms of a particular element have the SAME EXACT atomic number<span> (</span>number<span> of protons of course). The </span>atoms of different elements have very different numbers of protons. And of course, the MASS number of an atom is the TOTAL number as known, of protons and of course, the neutrons it contains in it.

I Hope my answer has come to your Help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead! :)

(Ps. Mark As Brainliest IF Helped!)

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3 years ago
Ian uses litmus paper to determine whether five unknown solutions are acids or bases. The litmus paper turns red when the pH is
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Why would Magnesium Phosphate (Mg3(PO4)2) not make an aqueous solution? <br><br> Please help!
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Answer:

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Explanation:

Hope this helped!

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Read 2 more answers
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