4.5 Periodic Trends

Question 1

What does periodic law state?

Answer 1

When arranged by increasing atomic number, the chemical elements display a regular and repeating pattern of chemical and physical properties.

Question 2

Atoms with similar properties are ________ or __________

Answer 2

Groups or families

Question 3

Why do groups have similar chemical properties?

Answer 3

They have the same number of valence electrons which governs their chemical behavior

Question 4

Atomic properties are dependent on

Answer 4

Number of protons
Number of electrons
Distance of electron from nucleus

Question 5

Atomic radius

Answer 5

Distance from the nucleus to the highest or outermost energy level

Question 6

Trend of atomic radius across the period

Answer 6

It decreases

Question 7

Why is trend of atomic radius moving accords happening?

Answer 7

The number of protons and electrons increases. They have opposite charges so the attraction between nucleus and electrons increases.

Question 8

Ionization energy

Answer 8

Energy required to remove an electron from s nutraceuticals, gaseous from.

Question 9

Trend of ionization energy across a period

Answer 9

It increases

Question 10

Why does the Trend of ionization energy across a period increase?

Answer 10

The closer an atom is to obtaining a stable configuration, the harder it will be to take away an electron.