Chemistry Semester 1 Review

Front

Which type of radiation has the greatest penetrating power?

Back

Gamma ray has the greatest penetrating power among the types of radiation.

Front

What group of elements has 2 valence electrons?

Back

The Alkaline Earth Metals group has 2 valence electrons.

Front

Which quantum number determines the energy of an electron in a hydrogen atom?

Back

The Principle quantum number (n) determines the energy of an electron in a hydrogen atom.

Front

True or False: The elements in a group have the same or similar properties.

Back

True. Elements in a group share similar properties.

Front

What shape represents an atomic orbital that is identified as a p-orbital?

Back

The p-orbital has a dumbbell shape.

Front

Define Alpha particle.

Back

An Alpha particle is a type of radiation consisting of 2 protons and 2 neutrons, equivalent to a helium nucleus.

Front

What is the significance of the Principle quantum number (n)?

Back

The Principle quantum number (n) indicates the main energy level of an electron in an atom.

Front

What are Transition Metals?

Back

Transition Metals are elements found in groups 3-12 of the periodic table, known for their ability to form variable oxidation states.

Front

What is a Beta particle?

Back

A Beta particle is a high-energy, high-speed electron or positron emitted during radioactive decay.

Front

What is the shape of an s-orbital?

Back

The s-orbital has a spherical shape.