Correct Answer: D. professionals

Correct Answer: C. accumulated fund

Correct Answer: D. 2√5

Explanation

p(4, 3) Q(2 - 1)

distance = \(\sqrt{(x_2 - x_1)^2 + (Y_2 - y_1)^2}\)

= \(\sqrt{(2 - 4)^2 + (-1 - 3)^2}\)

= \(\sqrt{(-2)^2 = (-4)^2}\)

= \(\sqrt{4 + 16}\)

= \(\sqrt{20}\)

= \(\sqrt{4 \times 5}\)

= 2\(\sqrt{5}\)

Correct Answer: B. Qiran

Correct Answer: D. transaction systematically to ascertain the financial position of a business

Correct Answer: B. board

Correct Answer: D. 2x + (1/x²)

Correct Answer: D. Ochuole

Correct Answer: C. high vapour pressures

Explanation

Let's analyze each property in relation to electrovalent (ionic) compounds:

• A. formation of crystalline solids: Electrovalent compounds consist of positively and negatively charged ions arranged in a regular, repeating three-dimensional lattice structure. This ordered arrangement results in the formation of crystalline solids. This *is* a characteristic.

• B. solubility in polar solvents: Many electrovalent compounds are soluble in polar solvents (like water). This is because the polar solvent molecules can interact with and surround the individual ions, overcoming the strong electrostatic forces within the crystal lattice and allowing the ions to disperse in the solution. This *is* a characteristic.

• C. high vapour pressures: Electrovalent compounds have very strong electrostatic forces of attraction between their ions. A large amount of energy is required to overcome these forces to allow ions to escape into the gaseous state. Therefore, they are generally non-volatile and have very low vapour pressures. High vapour pressures are characteristic of molecular compounds with weak intermolecular forces. This is not a characteristic.

• D. high melting and boiling points: Due to the strong electrostatic forces of attraction holding the ions together in the crystal lattice, a large amount of thermal energy is required to break these bonds and melt or boil the compound. Hence, they typically have high melting and boiling points. This *is* a characteristic.

Based on the analysis, C. high vapour pressures is not characteristic of electrovalent compounds.

The final answer is C

Correct Answer: A. defacto and dejure

Explanation

There are two types of population census. They are: Defacto Population Census and De jure Population Census. Defacto is that type of census where only those who physically present would be counted. Dejure is that type of census where an individual must be a permanent resident of an area. It is counting by proxy.