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Who is known as the father of the periodic table?
Dmitri Mendeleev.
What is the symbol for Iron?
What is the most abundant metal in the Earth's crust?
Aluminum (atomic number 13).
As you move from left to right across a period, what happens to the atomic radius?
It decreases because the increasing nuclear charge pulls electrons closer.
How many total elements are currently on the periodic table
118
Which element has the atomic number 1?
Hydrogen (one proton).
What is the chemical symbol for Sodium?
Na.
Highest electronegativity
Fluorine (F)
What do we call the vertical columns on the periodic table?
Groups (or families).
What is the atomic number of Carbon?
6.
What do we call elements that share properties of both metals and non-metals?
Metalloids.
How many valence electrons does a neutral atom of phosphorus (P), located in Group 15 of the periodic table, possess in its ground state?
5
What do we call the horizontal rows on the periodic table?
Periods.
Which group of elements is known for being unreactive and stable?
The Noble Gases (Group 18).
Which element has the atomic number 8 and 8 protons?
Oxygen.
valence electron of NI
28
What is the symbol for the element Gold?
Au (from the Latin aurum).
Are metals found mostly on the left side or the right side of the periodic table?
The left side
What is the most reactive metal family on the periodic table?
Alkali metals (Group 1).
what is the symbol of boron
B