Electrons

The electron configuration for potassium is

• Ar4s²

• 1s²2S²2P⁶3s¹

• Xe

• 1s²2S²2P⁶3s²3p⁶4s¹

Tags

NGSS.HS-PS1-1

Potassium has __ valence electrons

• 1

• 2

• 18

• 19

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

An electron orbital is _______

• A 3-dimensional space around the nucleus of an atom where electrons and protons exist

• A 3-dimensional space around the nucleus of an atom where an electron is most likely exist

• An orbit which electrons circle the nucleus like planet circle the Sun

• A 3-dimension space where nuclear reactions take place

_______ is the rule of thumb in which elements will bond to have eight electrons in their outer valence orbital, giving it the same electron configuration as a ___________.

• Octet Rule; Noble Gas

• Boarding House Rule; Noble Gas

• Electron Configuration; Alkali Metal

• Net Neutral Rule; Noble Gas

How many core electrons does potassium have?

• 1

• 2

• 18

• 19

Lithium-7 +1 electron configuration is _____

• He

• 1s²

• 1s²2s¹

• 1s²2s²

Chemical reactions involve ________

• electrons

• protons

• neutrons

• beta particles

• heat

Which element has the largest atomic radius?

• hydrogen

• potassium

• xenon

• cesium

Calcium _____

• is an alkaline earth metal

• has an electron configuration of Ar4s¹

• is a non metal

• has 2 core electons

Carbon ____

• is a non metal

• has 4 valence electrons

• has 2 core electrons

• has an electron configuration of 1s²2s²2p²