Atomic Structure Junior Cycle

Which Element is shown?

• Carbon

• Aluminium

• Oxygen

• Nitrogen

What is the atomic number of this element?

• 13

• 26.98

• 27

What is the mass number of this element?

• 13

• 26.98

What is the number of protons in this element?

• 13

• 14

• 27

What is the number of electrons in this element?

• 13

• 14

• 27

What is the number of neutrons in this element?

• 13

• 14

• 27

Which is correct?

• Protons orbit the nucleus and have a positive charge

• Protons are located in the nucleus and have a neutral charge

• Protons are located in the nucleus and have a positive charge

Which statement is correct?

• Electrons orbit the nucleus and have a negative charge

• Electrons orbit the nucleus and have a neutral charge

• Electrons are found in the nucleus and have a negative charge

The electrons are in shells. Which of the following is correct for the arrangement of electrons?

• 2,8,3

• 2,11

• 1,9,3

• 2,8,2

Which statement is correct?

• This element is potassium. There are 19 protons, 19 electrons and 19 neutrons.

• This element is potassium. There are 20 protons, 19 electrons and 20 neutrons.

• This element is potassium. There are 19 protons, 20 electrons and 19 neutrons.

• This element is potassium. There are 19 protons, 19 electrons and 20 neutrons.