Periodic table

Who is the creator of the periodic table?

• Tom Carter

• Paul Emile Lecoq de Boisbaudran

• Dmitri Mendeleev

• Bedirhan Cinar

What was the name given to the element predicted by Mendeleev that was one step away from aluminum?

• Scandium

• Germanium

• Gallium

• Eka-aluminum

Which element was discovered by Paul Emile Lecoq de Boisbaudran and named after Gaul?

• Technetium

• Gallium

• Rhenium

• Mendelevium

What is the melting point of gallium?

• 50 degrees Celcius

• 0 degrees Celcius

• 100 degrees Celcius

• 30 degrees Celcius

How many atoms of Mendelevium were successfully created by scientists at UC Berkeley?

• 17

• 10

• 20

• 5

What was the element officially named Mendelevium in 1963?

• 101

• Gallium

• Technetium

• Rhenium

What does the term 'eka' mean in the context of Mendeleev's predictions?

• Three

• Four

• One

• Two

What is the atomic weight of gallium?

• 69.72

• 50.25

• 55.88

• 80.11

What is the state of gallium at room temperature?

• Gas

• Liquid

• Solid metal

• Plasma

How many scientists have an element named after them?

• 15

• 10

• 20

• 5