WorksheetsElectrons
Total questions: 12
Worksheet time: 7mins
The electron configuration for potassium is
Ar4s2
1s22S22P63s1
Xe
1s22S22P63s23p64s1
Potassium has __ valence electrons
1
2
18
19
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
_______ has an electron configuration of 1s22s22p6
Carbon
Fluorine -1
Neon
Sodium +1
Which of these elements is the most chemically reactive?
Sodium
Helium
Boron
Silicon
