The electron arrangement of ions Q^2- and R³⁺ are as 2, 8, 8, and 2,8respectively. (a) Write the electron arrangement of the elements Q and R...

      

The electron arrangement of ions Q^2- and R³⁺ are as 2, 8, 8, and 2,8respectively.
(a) Write the electron arrangement of the elements Q and R
(b) Write the formula of the compound that would be formed between Q and R

  

Answers

---

a) Q 2, 3, 6
R 2, 8, 3
b) R₂Q₃

---

sharon kalunda answered the question on March 26, 2019 at 12:13

Next: A workshop has the following simple machines for lifting heavy loads, a wheel and axle, and a movable pulley. The wheel has a diameter of...
Previous: State and explain the Factors Influencing Span of Management.

View More Chemistry Questions and Answers | Return to Questions Index

Exams With Marking Schemes

• Grade 1
• Grade 2
• Grade 3
• Grade 4
• Grade 5
• Grade 6
• Grade 7
• Grade 8
• Grade 9
• PP1
• PP2
• Playgroup
• Form 1
• Form 2
• Form 3
• Form 4

Related Questions

---

• Study the flow chart below and answer the questions that follow.(Solved)
  

  Study the flow chart below and answer the questions that follow.
  
  i) Name the process in step I and the conditions for the reaction in step I
  Name of process
  Conditions
  ii) Identify substance N
  iii) Give
  I. One disadvantage of the continued use of substance such as M
  II. The name of the process that takes place in step III
  III. The name and structural formula of the substance Q
  Name
  Structural formula

  Date posted: March 26, 2019.  Answers (1)

• Below is a set up of the apparatus that is used to prepare sulphur trioxide. Name I. – Gas N - II. – Gas M – III. – Catalyst...(Solved)
  

  Below is a set up of the apparatus that is used to prepare sulphur trioxide.
  
  
  Name
  I. – Gas N -
  II. – Gas M –
  III. – Catalyst –
  IV. – Solid Y –

  Date posted: March 25, 2019.  Answers (1)

• What factors should be considered when siting a plant to manufacture sulphuric acid?(Solved)
  

  What factors should be considered when siting a plant to manufacture sulphuric acid?

  Date posted: March 25, 2019.  Answers (1)

• List down different types of amorphous sulphide.(Solved)
  

  List down different types of amorphous sulphide.

  Date posted: March 25, 2019.  Answers (1)

• Why is it necessary to vulcanise natural rubber before use?(Solved)
  

  Why is it necessary to vulcanise natural rubber before use?

  Date posted: March 25, 2019.  Answers (1)

• Name one substance used for vulcanisation of rubber.(Solved)
  

  Name one substance used for vulcanisation of rubber.

  Date posted: March 25, 2019.  Answers (1)

• List four ammonium salts and state the uses of each.(Solved)
  

  List four ammonium salts and state the uses of each.

  Date posted: March 25, 2019.  Answers (1)

• Explain how carbon monoxide is lethal when one inhales.(Solved)
  

  Explain how carbon monoxide is lethal when one inhales.

  Date posted: March 25, 2019.  Answers (1)

• State six uses of carbon dioxide.(Solved)
  

  State six uses of carbon dioxide.

  Date posted: March 25, 2019.  Answers (1)

• How many molecules, by avogadro’s number does 0.32g of oxygen gas has?(Solved)
  

  How many molecules, by avogadro’s number does 0.32g of oxygen gas has?

  Date posted: March 25, 2019.  Answers (1)

• What mass of Lead (II) nitrate could contain 13g of Lead?(Solved)
  

  What mass of Lead (II) nitrate could contain 13g of Lead?

  Date posted: March 25, 2019.  Answers (1)

• How many calcium ions and chloride ions are in 1 mole of calcium chloride, CaCl₂?.(Solved)
  

  How many calcium ions and chloride ions are in 1 mole of calcium chloride, CaCl₂?.

  Date posted: March 25, 2019.  Answers (1)

• Calculate the number of nitrogen molecules in 560cm³ of nitrogen gas at s.t.p.(Solved)
  

  Calculate the number of nitrogen molecules in 560cm³ of nitrogen gas at s.t.p.

  Date posted: March 25, 2019.  Answers (1)

• How many grams of Sulphur contain 3.0 x 10²¹ atoms?.(Solved)
  

  How many grams of Sulphur contain 3.0 x 10²¹ atoms?.

  Date posted: March 25, 2019.  Answers (1)

• 100cm³ of a gas at r.t.p was cooled to 60cm³. Calculate the new temperature of the gas in ⁰C if the pressure is kept constant.(Solved)
  

  100cm³ of a gas at r.t.p was cooled to 60cm³. Calculate the new temperature of the gas in ⁰C if the pressure is kept constant.

  Date posted: March 25, 2019.  Answers (1)

• Rates of diffusion of two gases A and B are in the ratio 2:1. If the molecular mass of gas A is 16g. Find the...(Solved)
  

  Rates of diffusion of two gases A and B are in the ratio 2:1. If the molecular mass of gas A is 16g. Find the molecular mass of B.

  Date posted: March 25, 2019.  Answers (1)

• In an experiment, it was found that a mole of a gas occupied 24.0dm³ at 20⁰C and atmospheric pressure. What volume would it occupy at...(Solved)
  

  In an experiment, it was found that a mole of a gas occupied 24.0dm³ at 20⁰C and atmospheric pressure. What volume would it occupy at S.T.P?

  Date posted: March 25, 2019.  Answers (1)

• Two gases, A and B have densities of 0.18gdm^-3 and 2.90gdm^-3 respectively. If they diffuse under the same conditions, what are their relative rates of...(Solved)
  

  Two gases, A and B have densities of 0.18gdm^-3 and 2.90gdm^-3 respectively. If they diffuse under the same conditions, what are their relative rates of diffusion.

  Date posted: March 25, 2019.  Answers (1)

• At 27⁰C, nitrogen has a volume of 650cm³ under pressure of 980mmHg. What would be its volume at the same temperature but at a pressure...(Solved)
  

  At 27⁰C, nitrogen has a volume of 650cm³ under pressure of 980mmHg. What would be its volume at the same temperature but at a pressure of 760mmHg?.

  Date posted: March 25, 2019.  Answers (1)

• Explain why dilute Sulphuric acid is a stronger acid than the concentrated one.(Solved)
  

  Explain why dilute Sulphuric acid is a stronger acid than the concentrated one.

  Date posted: March 25, 2019.  Answers (1)