Choose the correct answer for the element O

What is the atomic number of Oxygen?

• 6

• 7

• 8

• 9

What is the chemical symbol for Oxygen?

• O

• X

• Z

• Y

Which element has a higher electronegativity, Oxygen or Fluorine?

• Oxygen

• Fluorine

Select the best answer. Looking at the diagram, how many valence electrons does Li have?

• 0

• 1

• 3

• 2

Which of the following are reactive metals and have a higher melting point?

• Halogens

• Alkaline earth metals

• Metalloids

• Noble gases

Type the correct answer using the periodic table for the element O: Is this a transition metal, representative group, or inner transition metal?

Which of the following elements has the highest ionization energy?

• Oxygen

• Nitrogen

• Fluorine

• Neon

Type the correct answer using the periodic table for the element O: How many protons does it have?

Dalton was the first to propose the atomic theory of matter

• De Broglie

• J.J. Thomson

• James Chadwick

• Rutherford

• Dalton

J.J. Thomson discovered the electron with a cathode ray tube experiment and came up with the plum pudding model of the atom

• J.J. Thomson

• Rutherford

• Dalton

• James Chadwick

• De Broglie