CP-Unit Four

Front

What compound has the lowest melting point?

Back

N₂O₅ has the lowest melting point among the given options.

Front

What is the correct Lewis structure for CH₂O?

Back

The correct Lewis structure for CH₂O is represented by Option D.

Front

What happens to the size of an atom when it loses an electron?

Back

The size of the atom decreases when it loses an electron.

Front

How does electronegativity change in the second period from left to right?

Back

Electronegativity increases from left to right in the second period.

Front

Which ion is larger: Cu⁺, Cu²⁺, or Cu³⁺?

Back

Cu⁺ is the largest ion among Cu⁺, Cu²⁺, and Cu³⁺.

Front

Define melting point.

Back

The melting point is the temperature at which a solid becomes a liquid.

Front

What is a Lewis structure?

Back

A Lewis structure is a diagram that shows the bonding between atoms and the lone pairs of electrons.

Front

Explain the concept of electronegativity.

Back

Electronegativity is a measure of an atom's ability to attract and hold onto electrons.

Front

What is the trend of atomic size in the periodic table?

Back

Atomic size decreases across a period and increases down a group.

Front

What is the significance of ion size in chemistry?

Back

Ion size affects the properties of ionic compounds, including solubility and melting points.