Question

In the periodic table, the basic character of oxides

• A. Increases from left to right and decreases from top to bottom
• B. Decreases from right to left and increases from top to bottom
• C. Decreases from left to right and increases from top to bottom
• D. Decreases from left to right and increases from bottom to top

Answer 1

The correct option is C

Decreases from left to right and increases from top to bottom

Explanation for Correct answer:

Option (C): Decreases from left to right and increases from top to bottom

Periodic table:

• The periodic table is a tabular display of the chemical elements.
• The elements in the periodic table are arranged in order of atomic number.
• A period is the elements that are arranged in a horizontal row of the periodic table.
• A group is the elements that are arranged in a vertical row of the periodic table.

The basic character of oxides:

• The more electropositive the central atom, the more basic is the oxide.
• The bases can donate electrons to form new covalent bonds; therefore if they have a greater attraction for electrons they are less likely to share them.
• Thus, the greater the electronegativity of an atom, the less it is willing to share its electrons.
• The electronegativity(property of the element to attract electron pairs) decreases down the group. thus, the basic character of the oxides increases down the group.
• The electronegativity increases along the period, so the basic character decreases along the period

Therefore, the basic character decreases from left to right and increases from top to bottom