Chem Qtr 1 2018

The electron configuration of an atom is 1s²2s²2p⁶.  The number of electrons in the atom is 

• 3
• 6
• 8
• 10

What electron configuration matches an oxygen atom?

• 1s²2s²2p⁶3s2, 3p⁶4s²3d¹⁰4p⁵
• 1s²2s²2p⁴
• 1s²2s²2p⁶
• 1s²2s²2p⁶3s²3p⁶4s²3d¹

Which of the following is the smallest in size?

• K
• Na
• Li
• Cs

How many electrons can the first energy level hold?

• 1
• 2
• 8
• 0

What is the atomic mass of "F" rounded to the nearest whole number

• 9

• 18

• 17

• 19

Which of the following is a negatively charged subatomic particle?

• Electron
• Proton
• Neutron
• Quark

Particles in an atom that are neutral and have no charge are 

• negatrons 
• electrons 
• neutrons 
• protons 

What are the 3 particles that make-up the atom?

• protons, neutrons, and isotopes
• neutrons, isotopes, and electrons
• positives, negatives, and electrons
• protons, neutrons, and electrons

Tags

NGSS.MS-PS1-1

What part of the atom did Rutherford discover?

• orbitals
• protons
• electrons
• nucleus

Tags

NGSS.HS-PS1-8

True or False: There is nothing smaller than an atom.

• True
• False