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Atomic Structure
Isotopes & Ions
Periodic Table
Electron Configurations
Periodic Trends
100

The subatomic particles at the center of a Bohr model.

protons and neutrons

100

These differ in the number of neutrons.

Isotopes

100

What element is an alkaline earth metal found period 3?

Magnesium

100

What is the electron configuration of Carbon?

1s22s22p2

100

As you move down a group, atomic radius generally ________________. As you move across a period from left to right, atomic radius generally _______________.

increases, decreases

200

An element with 2 protons and 2 neutrons at the center of the atom.

Helium-4
200

These subatomic particles are gained or lost to form an ion.

Electrons

200

What element is found in period 5, group 14?

Tin

200

What element has the following electron configuration: 1s22s22p4

Oxygen

200

Ionization energy _____________ from left to right within a period and _____________ from top to bottom within a group.

increases, decreases

300

An atom with 2 electrons in the first orbital, 8 electrons in the second orbital and 1 electron in the outer orbital.

Sodium

300

What type of ion is Al3+?

Cation

300

In which set would all elements be expected to have very similar chemical properties?

A) S, Se, Si                  B) O, S, Se

C) Ne, Na, Mg              D) N, O, F 

B) O, S, Se

Elements in the same group/family/column share similar chemical properties.

300

How many valence electrons does phosphorus have? In which energy level do these valence electrons exist?

5 valence electrons in n=3
300

Which element is bigger:  Ca or Se?

Ca

400

This is the name for the outermost electrons.

Valence electrons
400

An ion with 19 protons and 18 electrons.

K+

400

The p orbital has how many subshells and electrons when filled?

3 lines, 6 arrows

400

Maximum number of valence electrons that can fit in energy level 1 (n=1)? In energy levels greater than 1 (n=2+)?

2; 8

400

Rank Sr, Ca, Ba in order of INCREASING ionization energy.

Ba, Sr, Ca

500

The total number of electrons in O-2.

10 electrons

500

An isotope with 7 protons, 7 electrons and 8 neutrons.

Nitrogen-15
500

A metalloid with 3 valence electrons.

Boron

500

The name of the family on the periodic table that has a ns2np6 electron configuration in the outer shell.

Noble gases

500

Rank P, S, Se in order of INCREASING atomic radius.

Se, P, S