Entrance Exam: Atomic Structure, Electronic Configuration

Which of the following statements concerning the three types of subatomic particles is correct?

• All types carry electrical charge.
• One of the three types carries electrical charge.
• None of the three types carry electrical charge.
• no correct response

Which of the following statements concerning a neutron is correct?

• Its mass is slightly less than that of a proton.
• It carries a positive charge of one unit.
• It carries a positive charge of two units.
• no correct response

Which of the following statements concerning an atom’s nucleus is correct?

• It contains all protons and all electrons.
• It is always positively charged.
• It accounts for most of the total volume of an atom.
• no correct response

Atoms as a whole are neutral because

• The numbers of neutrons exceeds that of protons or electrons.
• Charged subatomic particles lose their charge once they become part of an atom.
• Equal numbers of protons and electrons are present.
• no correct response

An atom that has an atomic number of 11 and a mass number of 23 contains how many neutrons?

• 11
• 12
• 23
• no correct response

The maximum number of electrons that an electron shell can accommodate

• is two
• is ten
• varies, depending on shell number
• no correct response

The maximum number of electron subshells within an electron shell

• is three
• is five
• varies, depending on shell number
• no correct response

The shape of a 1s orbital is

• circular
• spherical
• figure eight shape
• no correct response

In which of the following pairs of electron subshells does the first listed subshell have a higher energy than the second listed subshell?

• 2s, 2p
• 2s, 3s
• 3d, 2p
• no correct response

how many electrons can a 3d subshell accommodate?

• 2
• 6
• 10
• no correct response