G9 Q2 S1 Quantum Mechanical Model of an Atom

What is the electron configuration of Argon?

• 1s² 2s² 2p⁶

• 1s² 2s² 2p⁶ 3s¹

• 1s² 2s² 2p⁶ 3s²

• 1s² 2s² 2p⁶ 3s² 3p⁶

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which atom has an electron configuration of 1s² 2s² 2p⁶?

• He

• Ne

• Ar

• Xe

Tags

NGSS.MS-PS1-1

What is the name of this element?

• Lithium
• Boron
• Carbon
• Neon

Tags

NGSS.MS-PS1-1

How are electrons arranged in an atom?

• In groups of five
• In energy levels
• By color
• By shape

What is the atomic number of this element?

• 17

• 18

• 35

• 35.453

Tags

NGSS.MS-PS1-1

How many electrons can fit on the 1st energy level (orbital) for any Bohr Model?

• 2

• 6

• 8

• 10

Which particle is positive charge?

• Protons

• Electrons

• Orbital

• Neutron

Who gave plum pudding model of an atom?

• Democritus

• J. J. Thomson

• John Dalton

• Ernest Rutherford

What is the thing which is present in

Rutherford’s atomic model and not

present in Dalton’s and Thomson’s

atomic models?

• Electrons

• Nucleus

• Positive charge

• Electrically neutral atom

Bohr discovered that electrons are located in

• the nucleus

• inside protons

• electron cloud

• circular orbits around the nucleus