Mastery Flashcard Fall 2024

Front

What is the order of elements from Group 2 on the Periodic Table arranged by increasing atomic radius?

Back

Be, Mg, Ca

Front

What experiment led to the discovery of the electron?

Back

Cathode Ray Tube (CRT) Experiment

Front

How does electronegativity change across a period and down a group?

Back

Electronegativity increases from left to right within a period and decreases from top to bottom within a group.

Front

Where are protons located in an atom?

Back

In the nucleus.

Front

What is the noble gas electron configuration for a Sulfur atom?

Back

[Ne] 3s² 3p⁴.

Front

Define atomic radius.

Back

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

Front

What is the significance of the Cathode Ray Tube experiment?

Back

It demonstrated the existence of electrons and their negative charge.

Front

Explain the trend of atomic radius in the periodic table.

Back

Atomic radius decreases across a period and increases down a group.

Front

What is electronegativity?

Back

A measure of the tendency of an atom to attract a bonding pair of electrons.

Front

How does the position of an element in the periodic table affect its electronegativity?

Back

Electronegativity generally increases across a period and decreases down a group.