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Alekssandra [29.7K]
3 years ago
15

What ion will be formed by the selenium atom shown below when it has a stable set of valence electrons?

Chemistry
1 answer:
irina1246 [14]3 years ago
6 0
What ion will be formed by the selenium atom shown below when it has a stable set of valence electrons?Selenium atom

D. Se2-


Which of the following is the best description of how electrons are transferred in an ionic bond?

A. A metal atom loses electrons and a nonmetal atom gains electrons.

A user is constructing an ionic bond between beryllium and chlorine and has reached the stage below. What should the user do next?
Beryllium and chlorine

A. Transfer an electron from the beryllium atom to the chlorine atom.


Zinc phosphide, Zn3P2, is often used as a rat poison. Phosphorus has 5 valence electrons. How many valence electrons does each zinc atom lose?

B. 2

Lithium nitride has the chemical formula Li3N. Rubidium is in the same chemical family as lithium. What is the formula of rubidium nitride?

C. Rb3N

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Complete the sentences to best explain the ranking.
Jobisdone [24]

Answer:

dipole-dipole forces, ion-dipole forces, higher molar mass, hydrogen bonding, stronger intermolecular forces

Explanation:

<em>1. H₂S and H₂Se exhibit the following intermolecular forces: </em><em>dipole-dipole forces </em><em>and </em><em>ion-dipole forces</em><em>.</em>  These molecules have a bent geometry, thus, a dipolar moment which makes them dipoles. When they are in the aqueous form they are weak electrolytes whose ions interact with the water dipoles

<em>2. Therefore, when comparing H₂S and H₂Se the one with a </em><em>higher molar mass</em><em> has a higher boiling point.</em>  In this case, H₂Se has a higher boiling point than H₂S due to its higher molar mass.

<em>3. The strongest intermolecular force exhibited by H₂O is </em><em>hydrogen bonding</em><em>.  </em>This is a specially strong dipole-dipole interaction in which the positive density charge on the hydrogens is attracted to the negative density charge on the oxygen.

<em>4. Therefore, when comparing H₂Se and H₂O the one with </em><em>stronger intermolecular forces</em><em> has a higher boiling point. </em>That's why the boiling point of H₂O is much higher than the boiling point of H₂Se.

4 0
2 years ago
I NEED HELPP !! IM TAKING A TEST :( I WIKK GIVE BRAINLIST!!!!
Nadya [2.5K]

Answer: Purple

Explanation: It is impossible to land on purple because there isn't an option for it. You can't land on it if it's not a color on the spinner.

5 0
2 years ago
Someone help. trying to past this test but keep failing on this question.
Katarina [22]
A or b sorry if I’m wrong
8 0
2 years ago
What is the mol ratio of NH3 to N2
Natalija [7]
<span>N2</span>+3<span>H2</span>→2N<span>H<span>3 hope this helps 

</span></span>
7 0
2 years ago
Please help me i need this asp (will me mark brainless)
Dvinal [7]

A balanced chemical reaction equation is one in which the number of atoms of each of the atoms are the same on both sides of the reaction equation.

<h3>Balanced reaction equation</h3>

A balanced reaction equation is a type of reaction equation in which the number of atoms of each reactant on both sides of the reaction equation are the same.

Let us now try to balance each reaction;

  • 2H2 + O2 ----> 2H2O
  • S8 + 12O2 -------> 8SO3
  • 2HgO ----> 2Hg + O2
  • Zn + 2HCl ------> ZnCl2 + H2

Hence a balanced chemical reaction equation is one in which the number of atoms of each of the atoms are the same on both sides of the reaction equation.

Learn more about balancing reaction equations: brainly.com/question/7358082

4 0
2 years ago
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