Front

What happens to the atomic radius across a period in the periodic table?

Back

The atomic radius decreases from left to right.

Front

Which element has the most similar properties to Bromine (Br)?

Back

Fluorine.

Front

What is the electron configuration of Phosphorus (P)?

Back

1s2 2s2 2p6 3s2 3p3.

Front

Why was Mendeleev's periodic table considered unique?

Back

It predicted undiscovered elements.

Front

Which atom has a larger electronegativity: Rb or Cs?

Back

Rb has a larger electronegativity.

Front

Define atomic radius.

Back

The atomic radius is the distance from the nucleus of an atom to the outermost shell of electrons.

Front

What is electronegativity?

Back

Electronegativity is the tendency of an atom to attract electrons in a chemical bond.

Front

How does electronegativity change across a period?

Back

Electronegativity increases from left to right across a period.

Front

What is the significance of noble gases in the periodic table?

Back

Noble gases are inert and have a full valence shell, making them stable and unreactive.

Front

What is the periodic law?

Back

The periodic law states that the properties of elements are a periodic function of their atomic numbers.