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7 questions
What is a periodic table
An arrangement of elements in the column based on a set of properties that repeat from row to row
Atomic numbers
Protons neutrons and electrons
Which one is metal
Hydrogen
Nitrogen
Helium
Lithium
Which one is none metal
Lithium
Oxygen
Beryllium
Sodium
Which two are Metalloids?
Hydrogen and Lithium
Boron and silicon
Neon and flourine
Sodium and magnesium
Which one has a protons of 15
Neon
Calcium
Silicon
Phorophorus
Which one has 5 electrons
Phosphorus
Boron
Hydrogen
Lithium
Which is the 9th element
Silicon
Calcium
Flourine
Helium
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