Could you please tell me the Mass numbers of Barium, Krypton,Lanthanum, Molybdenum? I coul'nt find the information on the Periodic table. Please Help...
2006-10-25 03:26:44 · 7 answers · asked by Vatsala says जय श्री कृष्णा ! 4 in Science & Mathematics ➔ Chemistry
your periodic table sucks if it doesn't have that info
Ba = 137.33
Kr = 83.8
La = 138.905
Mo = 95.94
2006-10-25 04:37:10 · answer #1 · answered by xox_bass_player_xox 6 · 0⤊ 0⤋
The mass number represents the total number of protons and neutrons in an atom. For example, carbon has a mass number of 12, oxygen has mass number of 16, etc. Generally, the mass number info would be in the lower left of a cell in the periodic table.
2006-10-25 03:33:16 · answer #2 · answered by Dub 2 · 0⤊ 0⤋
Barium 137.33
Krypton 83.798
Lanthanum 138.91
Molybdenum 95.94
I've got an exhaustive list of elements n their mass numbers.
can get it (as a free gift) from www.webelements.com when u buy sumthing there. Comes in the form of a bookmark and a simple periodic table. Design's pretty good.
2006-10-25 03:44:27 · answer #3 · answered by luv_phy 3 · 1⤊ 0⤋
your answer will depend on the isotope that you are working with.
Generally though
Ba 137
Kr 84
La 139
Mo 96
these are mass number not atomic weights. Each of these elements can and do have more than 1 mass number. the people above are giving atomic weight which is an average of all the mass numbers of the different isotopes
2006-10-25 03:38:02 · answer #4 · answered by The Cheminator 5 · 1⤊ 0⤋
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2016-12-16 14:09:52 · answer #5 · answered by ? 4 · 0⤊ 0⤋
Baryum : 137.34
Krypton: 83.80
Lanthanum: 138.9055
Molybdenum: 95.94
check a periodic table of the elements anywhere on the web
2006-10-25 03:35:42 · answer #6 · answered by F.G. 5 · 0⤊ 1⤋
get a better periodic table.
barium- 137.327(7) g/mol (on wikipedia)
2006-10-25 03:30:39 · answer #7 · answered by Anonymous · 1⤊ 1⤋