NH 4. Ammonium +1 NH 4 PO 4 Phosphate -3 PO 4 NO 3

NH4

Ammonium +1NH4

PO4

Phosphate -3PO4

NO3

NO3

Nitrate -1

OH

OHHydroxide -1

SO4

Sulfate -2SO4

CO3

Carbonate -2CO3

The atomic number tells you…

The number of protons and electrons

An alpha particle has a mass of _____

4 (2 protons and 2 neutrons)

Show the alpha decay of Radon

Show the beta decay of Lithium

Write the isotope symbol for Oxygen 16

Which element is this?

Which element is this?

Silicon

How many valence electrons are in Al? Write the Lewis Dot Model

Which 2 elements have 10 neutrons?

F and NeF atomic number 9 Mass 19

Ne atomic number 10 Mass 20

Which radioactive particle does NOT change the identify of the element that

emits it?

Gamma Radiation (Gamma Ray)

Which radioactive particle changes a neutron into a proton?

Beta ParticleThis causes the atomic number to go up by

one. The mass is NOT changed because protons and neutrons have the same mass.

Estimate the average atomic mass of anelement where 75% has a mass of 20 and 25%

Has a mass of 22.20.020.521.0 21.522.0