Bohr Diagrams and Ions

An atom is neutral if

• the number of protons equals the number of electrons

• the number of neutrons equals the number of protons

• the number of electrons equals the number of neutrons

• it has gained or lost electrons

Which of the following correctly pairs the subatomic particle with its correct charge

• p⁺ e⁰ n^-

• p⁰ e^- n⁺

• p⁺ e^- n⁰

• p^- e⁰ n⁺

Which of the following is the ground state electron configuration for a neutral atom of Silicon (Si)?

• 2 - 8 - 6

• 2 - 8 - 4

• 2 - 7 - 5

• 2 - 7 - 7

Tags

NGSS.HS-PS1-1

Which of the following is the excited state electron configuration for a neutral atom of Silicon (Si)?

• 2 - 8 - 6

• 2 - 8 - 4

• 2 - 7 - 5

• 2 - 7 - 7

Tags

NGSS.HS-PS1-1

Which of the following is the correct Bohr Diagram for a neutral atom of Carbon in its ground state?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

If an atom GAINS or LOSES electrons it is called an

• isotope

• ion

• neutral atom

• electron cloud

If an atom has a charge of +2 it has

• gained 2 electrons

• lost 2 electrons

• gained 2 protons

• lost 2 protons

If an atom has a charge of -3 it has

• gained 3 electrons

• lost 3 electrons

• gained 3 protons

• lost 3 protons

How many protons and electrons does an ATOM of Nitrogen have?

• 7 protons and 8 electrons

• 7 protons and 7 electrons

• 11 protons and 11 electrons

• 11 protons and 23 electrons

Answer explanation

Remember the word ATOM implies that it is neutral

Tags

NGSS.MS-PS1-1

Atoms of Potassium like to lose one electron to become more stable. What will the charge of this new potassium ion be?

• +1

• +2

• -1

• -2

Answer explanation

Losing electrons leads to a positive charge.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2