Subatomic particles
The positive particle in an atom
Proton
The electron configuration of a top 20 element
2, 8, 8, 2
What is the chemical symbol for Helium?
He
What does the atomic number represent?
The number of protons and in a neutral atom the number of electrons
Define an isotope
When two atoms have the same number of protons but different atomic masses.
A negative particle in an atom
Electron?
Carbon has 6 electrons and its electron configuration must be this.
What is 2, 4
The element Hg.
Mercury
The number of protons and neutrons is an atom is also referred to as this.
Mass number
Atoms of different elements have different numbers of these.
Protons
The neutral particle in an atom
Neutron
What is a valence shell?
The chemical symbol for Gold
Au
The atomic number for Phosphorus.
15
Oxygen-16 has 8 protons, and 8 neutrons.
Oxygen-17 must have this different to Oxygen-16
9 neutrons
These particles are found in the nucleus.
Protons and neutrons
The electron configuration of Sodium?
2, 8, 1
The element that has the chemical symbol K.
Potassium
The atomic mass for Argon.
40
Nitrogen-15 has 7 protons, 7 electrons and how many neutrons?
8
The two subatomic particles that have near identical masses.
Protons and neutrons
Which element group has stable electron configuration
The Nobel Gases
(Helium, Neon, Argon, Krypton, Xenon, Radon)
Iron's chemical symbol.
Fe
The atomic number for Uranium.
92
What isotope of carbon is used for carbon dating?
Carbon - 14