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40 Ca2+
Mass number is 40
Atomic number (proton number) is 20
therefore 18 electrons as calcium has lost 2 electrons to become a Ca2+ ions
:D
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∙ 11y ago
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Which of these is an ion with a plus 2 plus charge O Al Na Ca?
the atomic no of calcium is 20 so to reach the nearest noble gas electronic configuration it loses 2 electrons and forms + 2 ion.
Does the Ca plus 2 ion have more electrons than the Ca atom?
No, Ca2+ has 2 electrons LESS than Ca
What is the chemical reaction for Ca plus Hci?
Ca + 2 HCl = CaCl2 + H2
What compound would form from Ca plus 2 and Cl?
Calcium Chloride
What is revealed in the reaction Ca(OH)2(s) Ca2 plus (aq) plus 2OH-(aq)?
If you mean Ca(OH)2(s) --> Ca2+(aq) + 2OH-(aq) this is the equation for the dissolving of calcium hydroxide in water.
How many electrons does Ca plus 2 have?
Ca is Calcium It's Atomic Number is 20. So it has 20electrons. so 20+2=22 wala
Is The Ca plus 2 ion larger than the Ca atom?
Mg2+ is larger Now, as for the logic behind this problem...The first thing to do is recognize that Ca2+ (Calcium) has lost 2 of its electrons, therefore its valence electron structure is the same as Ar's (Argon). Ar is in the same row as Mg. The trend for atomic radii is increasing to the left and down. Atomic radius increases to the left because the atoms to the right have more particles in the nucleus than their counterparts to the left; thus, the electrons are drawn closer to the nucleus, and the atomic radius is diminished.
Which of these is an ion with a plus 2 plus charge O Al Na Ca?
the atomic no of calcium is 20 so to reach the nearest noble gas electronic configuration it loses 2 electrons and forms + 2 ion.
What is the atomic number of He plus?
the atomic number is 2
Ca oh 2 plus h2so4?
Ca(OH )2 plus sulfuric acid yields water and CaSO4.
If 2 plus 2 equals 4 then what is an aba-ca-by eats a grabagobble?
The aba-ca-by =2
What is the symbol for Calcium in the Periodic Table?
The atomic symbol for an isotope of calcium will be the regular symbol for calcium, Ca. The number of protons will differ from standard calcium. This is written below the mass number Ca.
How do you balance Ca plus O2 equals Ca0?
2 Ca + 2O2 = 2(CaO2)
What is the Lewis structure for calcium nitride?
CaCO3 does not have a lewis structure because this molecule is composed of ions. (Ca+2 and CO3-2). you have to draw the lewis structure of the ions separately, as shown in the parenthesis.
Is Ca plus 2 an ion?
yes.
Does the Ca plus 2 ion have more electrons than the Ca atom?
No, Ca2+ has 2 electrons LESS than Ca
How is a calcium ionca plus 2 former from calcium atom?
The calcium ion Ca^2+ is derived from the calcium atom Ca when the Ca loses 2 electrons. Thus,Ca ===> Ca^2+ + 2e-
