History
Trends
Electron Configuration
Orbital Notation
Other
100

Johann Dobereiner's grouped elements in the periodic table into groups of _____?

3

100
Atomic radius __________ across the periodic table and __________ down the periodic table

decreases; increases

100
List the orbitals in order of increasing energy levels

(s,d,f,p)

s,p,d,f

100

The arrows in orbital notation drawings represent ______ while the lines they are drawn on represent __________.

electrons, orbitals

100

In the flame lab, color was produced when electrons in excited atoms return to ___________ energy states

(higher or lower)

lower

200

John Newlands suggested that elements be arranged in ______

octaves

200

Which of the following is a metalloid?

S, Ga, Si, C

Si

200

How many electrons occupy the second principal energy level of a neutral atom of iron?

8

200

__________ rule/principle explains that no two electrons can be in the same state/ have the same directional spin

Pauli's exclusion principle

200

_______________ is the measure of the tendency of an atom to attract electrons when bonding.

electronegativity

300

Mendeleev ordered the periodic table by increasing ______ ______ 

atomic mass

300

True or false: metals are brittle, gasses at room temperature, and poor conductors of electricity

False

300

How many electrons occupy a full 2s orbital?

4

300

_________ rule/principle explains that an electron occupies orbitals in order from lowest energy to highest. 


Aufbau

300

The atomic particles that determine chemical properties are __________

electrons

400

How did Henry Mosely arrange the periodic table?

increasing atomic number

400

Which element has a smaller ionization energy?

Br or Sn

Sn

400

Write out the electron configuration for Boron

1s22s22p1

400

__________ rule/principle explains that every orbital in a sublevel is singly occupied before any orbital is doubly occupied.

Hund's

400

Which period and block does iodine belong to?

5 and p

500

Why did Mendeleev get his periodic table published and well established?

He was able to use it to predict the physical properties of three elements that were not yet discovered

500

List the following elements in order of INCREASING (smallest to largest) electronegativity

S, Ge, Ag, Ba, F


Ba, Ag, Ge, S, F
500

This is the electron configuration for which element?

1s22s22p63s23p5

Chlorine

500

Draw the orbital notation for phosphorus

on the board

500
Elements in the same (group or period) share similar physical properties

group

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