2007-03-21 15:53:43 · 8 answers · asked by kfff s 1 in Science & Mathematics ➔ Chemistry
It will have 20 protons, the amount of electrons will be 20 only if its neutral. It can be positively charge (cation) or negatively charged (anion) depending on the the number of electrons.
2007-03-21 16:05:27 · answer #1 · answered by godsmackedmetwice 2 · 0⤊ 0⤋
All atoms of calcium will have 20 protons. If it doesn't have 20 protons, it's not calcium, but is some other element.
For a neutral atom, it will also have 20 electrons. It can have more electrons, making it an anion (which isn't common for calcium) or fewer, making it a cation (the most common ion for Ca is Ca2+, which would have 18 electrons).
2007-03-21 15:58:21 · answer #2 · answered by TheOnlyBeldin 7 · 2⤊ 0⤋
Calcium Atomic Number
2016-09-28 14:09:25 · answer #3 · answered by dutel 4 · 0⤊ 0⤋
Selenium (Se). The atomic number is the same as the number of protons. And if it has a neutral charge, it needs 34 electrons to balance out the Protons.
2016-03-18 05:31:58 · answer #4 · answered by Anonymous · 0⤊ 0⤋
The number of proton of calcium is equal to its atomic number which is 20 and the number of electrons of calcium equal to it protons number so in another word it has 20 protons and 20 electron.
2007-03-21 15:59:13 · answer #5 · answered by dragon_17745 2 · 0⤊ 1⤋
20 protons
20 elections
the number of protons is = to the number of electrons in an atom
2007-03-21 15:59:08 · answer #6 · answered by brisko389 3 · 0⤊ 1⤋
The Atomic number tells you it has 20 protons.
therefore it must have 20 electrons.
2007-03-21 16:48:54 · answer #7 · answered by Norrie 7 · 0⤊ 1⤋
20 electrons & protons
2007-03-21 15:58:07 · answer #8 · answered by priyadarshini u 2 · 0⤊ 1⤋