MOCK TEST FOR FINALS DAY 2 - CHEM

Front

What is the shape of a molecule with a trigonal planar arrangement?

Back

Trigonal planar means the molecule has three atoms bonded to a central atom, all in the same plane, forming a flat triangle.

Front

What type of bond is present in O₂?

Back

O₂ has a double bond, which means two pairs of electrons are shared between the two oxygen atoms.

Front

Why are ionic compounds solid at room temperature?

Back

Ionic compounds are solid at room temperature because they have high melting points due to strong ionic attractions between the charged ions.

Front

What is a covalent bond?

Back

A covalent bond is a type of chemical bond where two atoms share one or more pairs of electrons.

Front

What is the atomic mass of carbon with 6 protons and 6 neutrons?

Back

The atomic mass of carbon is 12, calculated by adding the number of protons (6) and neutrons (6).

Front

Define ionic bond.

Back

An ionic bond is a type of chemical bond formed through the electrostatic attraction between oppositely charged ions.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons from one atom to another, while covalent bonds involve the sharing of electrons.

Front

What is the molecular shape of a tetrahedral molecule?

Back

A tetrahedral molecule has four atoms bonded to a central atom, arranged in a three-dimensional shape resembling a pyramid with a triangular base.

Front

What is the significance of electron sharing in covalent bonds?

Back

Electron sharing in covalent bonds allows atoms to achieve a full outer shell, leading to greater stability.

Front

What are metallic bonds?

Back

Metallic bonds are formed by the attraction between positively charged metal ions and the sea of delocalized electrons surrounding them.