how many electrons are in Ca2+???
2007-10-13 10:33:36 · 7 answers · asked by frizzy_ghost 1 in Science & Mathematics ➔ Chemistry
Calcium has 20 electrons, same as the atomic number.
Also has 20 Protons
And 20 Neutrons.
Ca2+ does have 18 electrons.
2007-10-13 10:38:01 · answer #1 · answered by ? 5 · 0⤊ 0⤋
First answerer is right.
Ca has 20 electrons....see the Periodic table:
http://www.rfcafe.com/references/general/periodic_table.htm
So Ca 2+ is missing 2 electrons thus 20-2=18 electrons.
2007-10-13 17:38:25 · answer #2 · answered by ♥zene purrs♥ 6 · 1⤊ 0⤋
since the atomic number ie no of electrons tat calcium has got is 20
since ca2+ means tat he calcium has donated 2 electrons .
so ca2+ ha got 20-2=18 electrons
2007-10-13 17:44:40 · answer #3 · answered by rajini 2 · 1⤊ 0⤋
20 - 2 = 18
2007-10-13 17:36:03 · answer #4 · answered by Gervald F 7 · 2⤊ 0⤋
40 electrons!
2007-10-13 17:36:07 · answer #5 · answered by Meredith S 2 · 0⤊ 0⤋
it it's an ion, that means it's ionically bonded to another molecule, usually. which means the electrons are in constant orbit around both atoms, and usually distributed evenly.
independently, 18 is the correct answer
2007-10-13 17:37:16 · answer #6 · answered by bluejay_jh7 3 · 0⤊ 0⤋
is 2 the oxidation number?
if so, then it's 20.
but if it's Ca subscript 2, then it's 40
2007-10-13 17:36:18 · answer #7 · answered by ? 2 · 0⤊ 0⤋