Periodic Law Review

Front

A horizontal row of elements in the periodic table is called:

Back

Period

Front

How many valence electrons does the element have if it is in group 1?

Back

1

Front

Which element has the largest electronegativity in the halogens?

Back

Fluorine (F)

Front

Which atom's valence electron(s) experience more shielding: Ca, Be, Ba, or Mg?

Back

Barium (Ba)

Front

Identify the period and group of the element with the electron configuration 1s² 2s² 2p⁶ 3s² 3p³.

Back

Period 3, Group 15

Front

What is the definition of electronegativity?

Back

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

Front

What is the general trend of electronegativity in the periodic table?

Back

Electronegativity increases across a period and decreases down a group.

Front

What is the significance of valence electrons in chemical bonding?

Back

Valence electrons determine how an atom can bond with others and its chemical reactivity.

Front

Define the term 'shielding effect' in atomic structure.

Back

The shielding effect refers to the reduction in effective nuclear charge on the electron cloud, due to the presence of other electrons.

Front

What is the electron configuration for a noble gas?

Back

Noble gases have a full outer shell, typically represented as ns²np⁶.