WorksheetsPeriodic table
Total questions: 20
Worksheet time: 19mins
What element has 77 protons?
Selenium
Iridium
Platinum
Tungsten
How many electrons does Calcium have?
60
6
40
20
What element has an atomic mass of 151.96?
Sm
Gd
Eu
Sn
What is the atomic number of sodium?
23
22
12
11
How many neutrons does phosphorus have?
15
30
31
16
What element has an atomic mass of 238.03?
radium
livermorium
uranium
neptunium
What is the atomic number of cobolt?
27
58
59
31
How many electrons are in beryllium?
9
4
5
6
What element has no neutrons?
helium
lithium
neon
hydrogen
What is the element with 104 neutrons?
Rf
Lu
Ba
Ce
How many protons are in Krypton?
83
84
47
36
What element has 12 neutrons?
carbon
calcium
magnesium
aluminum
How many neutrons are in argon?
18
39
22
40
How many electrons are in helium?
3
1
2
4
What element has 40 electrons?
calcium
scandium
zirconium
yitrium
How many neutrons does chlorine have?
17
18
35
36
How many protons does radon have?
37
44
222
86
What is the atomic number of titanium?
81
22
52
73
What element has 55 electrons?
caesium
cadmium
silver
aluminum
How many protons are in iodine?
126
127
54
53
