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What element is this?

The periodic table is the chemist's roadmap to the elements! You will refer to this table often to find atomic masses and other properties. As we progress through the semester other chemical mysteries will be revealed. Become familiar with the layout and information available from the periodic table by answering these questions.

The atomic number listed on the periodic table gives you infomation about each atom's protons and electrons. If you know the mass number of an element the number of neutrons can also be determined. Use this quiz to practice using atomic numbers.

Here is a complete periodic table to get you started:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1 1
H		 2
He 
2 3
Li 		 4
Be 		 5
B		 6
C		 7
N		 8
O		 9
F		 10
Ne
3 11
Na		 12
Mg		 13
Al		 14
Si		 15
P		 16
S		 17
Cl		 18
Ar
4 19
K		 20
Ca		 21
Sc		 22
Ti		 23
V		 24
Cr		 25
Mn		 26
Fe		 27
Co		 28
Ni		 29
Cu		 30
Zn		 31
Ga		 32
Ge		 33
As		 34
Se		 35
Br		 36
Kr
5 37
Rb		 38
Sr		 39
Y		 40
Zr		 41
Nb		 42
Mo		 43
Tc		 44
Ru		 45
Rh		 46
Pd		 47
Ag		 48
Cd		 49
In		 50
Sn		 51
Sb		 52
Te		 53
I		 54
Xe
6 55
Cs		 56
Ba		 57
La		 72
Hf		 73
Ta		 74
W		 75
Re		 76
Os		 77
Ir		 78
Pt		 79
Au		 80
Hg		 81
Tl		 82
Pb		 83
Bi		 84
Po		 85
At		 86
Rn
7 87
Fr		 88
Ra		 89
Ac		 104
Rf		 105
Ha		 106
Sg		 107
Ns		 108
Hs		 109
Mt		 110
 		 111
 		 112
 
    58
Ce		 59
Pr		 60
Nd		 61
Pm		 62
Sm		 63
Eu		 64
Gd		 65
Tb		 66
Dy		 67
Ho		 68
Er		 69
Tm		 70
Yb		 71
Lu
    90
Th		 91
Pa		 92
U		 93
Np		 94
Pu		 95
Am		 96
Cm		 97
Bk		 98
Cf		 99
Es		 100
Fm		 103
Md		 102
No		 103
Lr

Answer by clicking directly on the appropriate button on the periodic table.

1. Click on the element with 6 electrons.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1 1
 2
2 3
 4
 5
 6
 7
 8
 9
 10
3 11
 12
 13
 14
 15
 16
 17
 18
4 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
5 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
6 55
 56
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
7 87
 88
 103
 104
 105
57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
 100
 103
 102

2. Click on the element which has 10 electrons when it is a +2 ion.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1 1
 2
2 3
 4
 5
 6
 7
 8
 9
 10
3 11
 12
 13
 14
 15
 16
 17
 18
4 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
5 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
6 55
 56
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
7 87
 88
 103
 104
 105
57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
 100
 103
 102

3. This element has a mass number of 14 and equal numbers of protons and neutrons.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1 1
 2
2 3
 4
 5
 6
 7
 8
 9
 10
3 11
 12
 13
 14
 15
 16
 17
 18
4 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
5 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
6 55
 56
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
7 87
 88
 103
 104
 105
57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
 100
 103
 102

4. This element has 54 electrons when it is a -1 ion.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1 1
 2
2 3
 4
 5
 6
 7
 8
 9
 10
3 11
 12
 13
 14
 15
 16
 17
 18
4 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
5 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
6 55
 56
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
7 87
 88
 103
 104
 105
57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
 100
 103
 102