What is it?
2007-01-06 20:43:04 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
I don't want the answer in decimals. We aren't taught the mass numbers in decimals.
2007-01-06 20:49:16 · update #1
There are many mass numbers for Potassium and Calcium because there are many isotopes of the elements. The one that you see in the periodic table is the ratio of all the mass numbers which came from the isotopes.
Calcium can have a mass number of 40 while potassium can have a mass number of 39 (this is the common mass number among the isotopes of the element).
*Potassium has also a mass number of 40. It is his isotope.
Isotope - an element that has different number of neutrons...
Mass number = protons + neutrons
2007-01-07 00:47:33 · answer #1 · answered by radioactive_nitroglycerine 3 · 1⤊ 0⤋
Calcium Atomic Mass
2016-12-16 12:33:25 · answer #2 · answered by ? 4 · 1⤊ 0⤋
Potassium Atomic Number
2016-09-28 05:16:52 · answer #3 · answered by ? 4 · 0⤊ 0⤋
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RE:
What is the mass number of Potassium and Calcium?
What is it?
2015-08-06 17:50:51 · answer #4 · answered by Anonymous · 0⤊ 0⤋
mass number of potassium(k):39
mass number of calcium(Ca):40
best wishes,
2007-01-06 22:07:53 · answer #5 · answered by Hussein A 2 · 0⤊ 0⤋
Potassium (IPA: /pə(ʊ)ˈtasiəm/) is a chemical element. It has the symbol K (Arabic: al qalja → Latin: kalium) and atomic number 19 and an atomic mass of 39.098.
Calcium (IPA: /ˈkalsiəm/) is the chemical element in the periodic table that has the symbol Ca and atomic number 20. It has an atomic mass of 40.078.
2007-01-06 20:46:40 · answer #6 · answered by Joe 2 · 1⤊ 1⤋
Potassium (K) = 39
Calcium (Ca) = 40
2007-01-06 23:26:41 · answer #7 · answered by ? 7 · 0⤊ 0⤋
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Ar-40 ---> 18 protons, 22 neutrons K-40 ---> 19 protons, 21 neutrons Ca-40 ---> 20 protons, 20 neutrons The mass number of 40 is the sum of the protons and the neutrons.
2016-03-27 00:25:28 · answer #8 · answered by Anonymous · 0⤊ 0⤋
Calcium Atomic Symbol
2016-06-26 16:57:28 · answer #9 · answered by ? 3 · 0⤊ 0⤋
put it bluntly, you are just plain lazy to look up the periodic table. it is listed there. full stop. go on and search in the periodic table.
2007-01-06 22:00:55 · answer #10 · answered by Yue C 1 · 0⤊ 0⤋