An atom X has three electrons in its outermost shell. Which ion will most likely be formed by X?
Required
2 points
2
Question 2
2.
Which statement explains whether NaCl or BeO will have a stronger bond?
Required
2 points
2
Question 3
3.
Read the passage and use the diagram to answer the next question.
The image shows the unit cell for perovskite (CaTiO4) an ionic compound. It was discovered in 1839 in Russia by Gustav Rose, and a compound with the same structure is used to manufacture solar cells. The melting point of perovskite is 1980°C.
Which statement explains why the melting point of perovskite is 1980°C?
Required
2 points
2
Question 4
4.
Read the passage and use the diagram to answer the next question.
The image shows the unit cell for perovskite (CaTiO4). It was discovered in 1839 in Russia by Gustav Rose, and a compound with the same structure is used to manufacture solar cells. The melting point of perovskite is 1980°C.
A group of scientists is conducting an investigation to study the conductivity of perovskite. At which temperature do they need to perform the experiments for perovskite to conduct electric current?
Required
2 points
2
Question 5
5.
Which of the following Lewis structures correctly represent CaCl2?