Element Symbols
What is the symbol for neon?
Ne
How are groups and periods different?
Groups are vertical columns and periods are horizontal rows
What is the family name for the group 2 elements?
Alkaline earth metals
What does atomic number represent?
The number of protons in an atom
Dmitri Mendeleev
What is the symbol for potassium?
K
What is the name of the element in group 14, period 2?
Carbon
Fluorine and iodine belong to which family?
Halogens
What does atomic mass represent?
The number of protons and neutrons in an atom
How many group are on the periodic table?
18
What is the symbol for iron?
Fe
What is the name of the element in group 9, period 4?
Cobalt
Give a physical property of alkali metals.
Silver, shiny, malleable etc.
How many protons does chromium have?
24
What are metalloids?
Elements on the staircase of the periodic table that have some properties of metals and non-metals
What is the symbol for promethium?
Pm
What is the name of the element in group 2, period 6?
Barium
What alkali metal is more reactive, rubidium or cesium?
Cesium
How many electrons does gold have?
79
Are most elements on the periodic table solid, liquid, or gas at room temperature?
Solids
What is the symbol for manganese?
Mn
What is the name of the element in group 17, period 5?
Iodine
What is the family name for elements that are uniquely NOT reactive?
Noble gases
How many neutrons does chlorine have?
19
How do you calculate the number of neutrons in an atom?
Atomic mass subtract atomic number