Periotic Table Flashcards
(48 cards)
How many elements are there in the periodic table?
118 elements
What is the atomic number of an element?
The number of protons in the nucleus of an atom
What does the period of an element represent in the periodic table?
The number of electron shells the element has
Which element has the symbol ‘H’?
Hydrogen
What is the most electronegative element in the periodic table?
Fluorine
What group does helium belong to in the periodic table?
Noble gases
What does the term ‘transition metal’ refer to in the periodic table?
Elements that form a bridge between the main group elements
What is the most abundant element in the Earth’s crust?
Oxygen
What is the lightest element in the periodic table?
Hydrogen
Which element has the atomic number 92?
Uranium
What is the symbol for potassium?
K
What is the state of matter of the majority of elements in the periodic table at room temperature?
Solid
What does the term ‘periodic’ refer to in the periodic table?
The repeating pattern of properties
What is the atomic symbol for gold?
Au
Which element is essential for human life?
Carbon
What is the atomic number of carbon?
6
What does the term ‘alkali metal’ refer to in the periodic table?
Highly reactive metals in Group 1
What is the most reactive nonmetal in the periodic table?
Fluorine
Which group in the periodic table contains the noble gases?
Group 18
What is the term for elements in the periodic table that have similar properties?
Chemical families or groups
What is the term for the horizontal rows in the periodic table?
Periods
What is the term for the vertical columns in the periodic table?
Groups
What is the atomic number of the element with the symbol ‘Ne’?
10
What group does oxygen belong to in the periodic table?
Chalcogens
