Shells
What is a valence shell?
The outer shell of an atom
What is a valence electron?
An electron in the outer shell of an atom
What is the atomic mass of an element?
The mass of a single atom of that element
How many protons does Lead (Pb) have?
82
How many shells does Magnesium (Mg) have?
3
How many valence electrons does Calcium (Ca) have?
2
What is the mass number of an element?
The number of protons and neutrons in one atom of that element
How many electrons does an atom of Cesium (Cs) have?
55
What is the most amount of shells an element on the current periodic table has?
7
How many valence electrons does Gallium (Ga) have?
3
What is the atomic mass of phosphorous (P)?
30.97
What is the lightest element?
Hydrogen
How many elements have less than 4 shells?
How many valence electrons does Helium (He) have?
2
What is the mass number of Sulfur (S)?
32
What is the exact charge of an iron (Fe) atom with 25 electrons?
1+
How many shells does Lanthanum (La) have?
6
What is the root of the word valence, and what does it mean?
Val or valere, meaning "strong"
10
Name a gas that is not a Noble Gas
Hydrogen (H), neon (Ne), oxygen (O), fluorine (F), or chlorine (Cl)