atomic structure, electron configuration + periodic table

Question 1

What are the three types of subatomic particles and their charges?

Answer 1

proton (positive charge), electron (negative charge), neutron (neutral charge)

Question 2

What are all the parts of the atom?

Answer 2

Nucleus (protons and neutrons), Electrons, shells

Question 3

How do you determine the atomic number?

Answer 3

A - atomic number, P - protons, E - electrons

Question 4

How to calculate the mass number?

Answer 4

Mass number = protons + neutrons

Question 5

What is the electron configuration rule?

Answer 5

2, 8, 8, 2

Question 6

What is the maximum number of electrons in the first 4 shells?

Answer 6

The rule for the max number of electrons is 2n²

Shell 1 : 2, Shell 2 : 8, Shell 3 : 18, Shell 4 : 32

Question 7

What are the 4 main groups of the periodic table?

Answer 7

alkali metals, alkaline earth metals, halogens, and noble gases

Question 8

What do period numbers tell us about an element?

Answer 8

The number of shells that the atom has occupied by electrons.

Question 9

What do group numbers tell us about an element?

Answer 9

Group numbers (1,2, 13-18) tell us the amount of valence electrons in an atom, from 13 onwards forget the 1.

Question 10

What are the most reactive groups on the periodic table?

Answer 10

Alkali metals and halogens.

Question 11

Why are noble gases not reactive?

Answer 11

Because they have a full valence shell.

Question 12

Describe the common features of elements in the same group or period.

Answer 12

Elements in the same group have the same number of valence electrons. Elements in the same period share the same number of shells.