Periodic Table
What number tells you the number of protons and electrons?
Atomic Number
As we go across a period what happens to the Atomic Radius
It decreases
What is the name of element number 1?
Hydrogen
What element has the symbol Xe?
Xenon
How do you figure out the number of neutrons?
Subtract the atomic number from the mass number
As we go down a group what happens to the Atomic Radius?
It Increases.
Which element has an atomic number of 92.
U, Uranium
What element has 17 electrons?
Chlorine
How do you find an element's mass number?
Add the number of neutrons and the number of protons together
All room temperature gases are this kind of element.
non-metals
What is the name of the element with the elemental symbol Zr?
Zirconium
What element's symbol is K?
Potassium
How many liquids are on the periodic table?
2 possibly 3, we're not sure about Francium
As you go down Group 1 what happens to the melting point of the elements?
It goes down
What element is a gas with exactly 18 protons?
Argon
The number of electrons in an atom of IRON
26
What are 'valence electrons'?
They are the electrons in the outermost shell
As you go down group 7 (Halogens) what happens to the Melting point of the elements?
It goes up.
What element is a solid with a mass number of 251, and is named after a US State ?
Californium
How many electrons does an atom of Uranium have?
92