Electrons and Periodicity

Front

How does atomic radius change from right to left on the periodic table?

Back

Atomic radius increases from right to left on the periodic table due to decreasing nuclear charge and increased electron shielding.

Front

What happens when an electron relaxes back to its ground state (closer to the nucleus)?

Back

When an electron relaxes back to its ground state, it emits a quantum of energy, often in the form of light.

Front

What is the charge of a cation?

Back

A cation has a positive charge, formed when an atom loses one or more electrons.

Front

Which of the following elements is a transition metal: K, Cl, Mn, B?

Back

Manganese (Mn) is a transition metal, characterized by its ability to form variable oxidation states.

Front

What is the next atomic orbital in the series 1s, 2s, 2p, 3s, 3p, 4s?

Back

The next atomic orbital in the series is 3d, which follows the 4s orbital in energy levels.

Front

Define atomic radius.

Back

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

Front

What is the trend of ionization energy across a period?

Back

Ionization energy generally increases across a period from left to right due to increasing nuclear charge.

Front

What is electronegativity?

Back

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

Front

What is the charge of an anion?

Back

An anion has a negative charge, formed when an atom gains one or more electrons.

Front

What is the significance of the octet rule?

Back

The octet rule states that atoms tend to gain, lose, or share electrons to achieve a full outer shell of eight electrons.