How many electrons does the most common ion of calcium Ca have?

How many electrons does the most common ion of calcium Ca have?
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`RH_(2)` ( ion exchange resin) can replace `Ca^(2+)`d in hard water as. `RH_(2)+Ca^(2+)rarrRCa+2H^(+)` `1 "litre"` of hard water passing through `RH_(

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How many EDTA molecules are required to make an octahedral complex with a `Ca^(2+)` ion?

Description : How many EDTA molecules are required to make an octahedral complex with a `Ca^(2+)` ion?

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Why does Ca form Ca plus 2 ion?

Description : Why does Ca form Ca plus 2 ion?

Last Answer : When calcium loses its two valence electrons from its 4th energy shell, the next lower (3rd) energy shell has an octet of electrons, which makes the calcium 2+ cation stable, having the same electron configuration as the noble gas argon.

Consider the following statements: 1. Carbonate hardness is due to bicarbonates. 2. Non-carbonate hardness is due to sulphates and chlorides of Ca and Mg. 3. Both the hardnesses can be removed by lime-soda method. 4. Both the hardnesses can be removed by ion-exchange method. Which of these statements are correct? (a) 1, 2 & 3 only (b) 1, 2 & 4 only (c) 2, 3 & 4 only (d) 1, 2, 3 & 4

Description : Consider the following statements: 1. Carbonate hardness is due to bicarbonates. 2. Non-carbonate hardness is due to sulphates and chlorides of Ca and Mg. 3. Both the hardnesses can be removed by lime-soda method. 4. Both the hardnesses can be ... (b) 1, 2 & 4 only (c) 2, 3 & 4 only (d) 1, 2, 3 & 4

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An identified source of irrigation water has ion concentrations of Na+ , Ca++ and Mg++ as 20, 10 and 8 milliequivalents per litre, respectively. The SAR of this water is approximately : a) 2.06 b) 6.67 c) 2.67 d) zero

Description : An identified source of irrigation water has ion concentrations of Na+ , Ca++ and Mg++ as 20, 10 and 8 milliequivalents per litre, respectively. The SAR of this water is approximately : a) 2.06 b) 6.67 c) 2.67 d) zero

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For an `Al^(+3)` ion , if atomic number (Z) =13 and number of neutrons is 14 . Then the number of electrons in will be :-

Description : For an `Al^(+3)` ion , if atomic number (Z) =13 and number of neutrons is 14 . Then the number of electrons in will be :-

Last Answer : For an `Al^(+3)` ion , if atomic number (Z) =13 and number of neutrons is 14 . Then the number of electrons in will be :- A. 13 B. 12 C. 10 D. 11

An ion is reduced to the element when it absords `6xx10^(20)` electrons. The number of equivalents of the ion is:

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Description : The complex ion that does not have d electrons in the metal atom is

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Description : The number of unpaired electrons present in complex ion `[FeF_(6)]^(3-)` is:

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The hybridisation and unpaired electrons in `[Fe(H_(2)O)_(6)^(2+)]` ion are :

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How many electrons are there in the lithium ion?

Description : How many electrons are there in the lithium ion?

Last Answer : A lithium ion has 2 electrons. A lithium atom has 3 electronsand changes to an ion when it loses an electron.

How many number of valence electrons are there in a sulphide ion?

Description : How many number of valence electrons are there in a sulphide ion?

Last Answer : The sulfide ion is S^2-, so it has 2 additional valenceelectrons compared to neutral sulfur. Neutral sulfur has 6 valenceelectrons, so sulfide ion would have 8 valence electrons.

How many electrons are contained in an ion formed from an atom of K?

Description : How many electrons are contained in an ion formed from an atom of K?

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How many protons and electrons are there in a chloride ion?

Description : How many protons and electrons are there in a chloride ion?

Last Answer : Chlorine has 17 protons and an atom of Chlorine would have 17electrons. However a Chloride Ion will have one more electron ie 18electrons and will be negatively charged.

What is the charge on a hypothetical ion with 65 protons and 62 electrons?

Description : What is the charge on a hypothetical ion with 65 protons and 62 electrons?

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How many protons and electrons are there in a chloride ion?

Description : How many protons and electrons are there in a chloride ion?

Last Answer : Chlorine has 17 protons and an atom of Chlorine would have 17electrons. However a Chloride Ion will have one more electron ie 18electrons and will be negatively charged.

How many electrons are in an ion of sulfur (s2-)?

Description : How many electrons are in an ion of sulfur (s2-)?

Last Answer : 18 electrons

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Last Answer : (D) Gamma rays are high energy electrons

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There are two properties of the cell necessary to maintain nonequilibrium cellular composition; the first is selectivity and the second is energy conversion. Which of the following statement(s) is/are true concerning energy converting transport? a. The site of energy conversion and transport in the plasma membrane involves the phospholipid component b. The Na+-K++-ATPase derives energy from hydrolysis of extracellular ATP c. In some systems, energy inherent in the transmembrane ion gradient can be used to drive transport of a second species d. Examples of species transported via secondary active transport include hydrogen ions, calcium, amino acids and glucose

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The two sub-units of ribosome remain united at a critical ion level of (a) magnesium (b) calcium (c) copper (d) manganese.

Description : The two sub-units of ribosome remain united at a critical ion level of (a) magnesium (b) calcium (c) copper (d) manganese.

Last Answer : (b) calcium

The two sub-units of ribosome remain united at a critical ion level of (a) magnesium (b) calcium (c) copper (d) manganese.

Description : The two sub-units of ribosome remain united at a critical ion level of (a) magnesium (b) calcium (c) copper (d) manganese.

Last Answer : b) calcium

The two sub-units of ribosome remain united at a critical ion level of (a) magnesium (b) calcium (c) copper (d) manganese

Description : The two sub-units of ribosome remain united at a critical ion level of (a) magnesium (b) calcium (c) copper (d) manganese

Last Answer : magnesium

Name the ion responsible for unmasking of active sites for myosin for cross-bridge activity during muscle contraction. (a) Calcium (b) Magnesium (c) Sodium (d) Potassium

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How many electrons does Ca plus gain or lose?

Description : How many electrons does Ca plus gain or lose?

Last Answer : You already gave the answer yourself. You see, ions don't change the number of protons and neutrons of an atom. It only changes the number of electrons. Ca originally has 20 electrons, protons, and ... of protons and neutrons can change in an atom, is by the process of nuclear fission or fusion.

Which of the following is a base (APEX)HI (hydroiodic acid)Ca(OH)2 (calcium hydroxide)H2CO3 (carbonic acid)HNO3 (nitric acid)?

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Last Answer : Ca(OH)2 (calcium hydroxide) (Apex)

The amount of lime, `Ca(OH)_(2)` required to remove the hardness in 60 L of pond water containing 1.62 mg of calcium bicarbonate per 100 ml of water,

Description : The amount of lime, `Ca(OH)_(2)` required to remove the hardness in 60 L of pond water containing 1.62 mg of calcium bicarbonate per 100 ml of water,

Last Answer : The amount of lime, `Ca(OH)_(2)` required to remove the hardness in 60 L of pond water containing 1.62 mg of ... 0.222g` C. `2.22 g` D. `0.444 g`

Which of the following product of PIP`""_(2)` diffuses into the cytoplasm triggering the release of `Ca^(2+)` for intracellular calcium-mediated proce

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Last Answer : Which of the following product of PIP`""_(2)` diffuses into the cytoplasm triggering the release of `Ca^(2 ... `IP_3` B. DG C. cAMP D. Protein kinase

What is the percent composition of calcium (Ca) in (CaO)?

Description : What is the percent composition of calcium (Ca) in (CaO)?

Last Answer : 40 g / 56 g X 100%

What is the percent composition of calcium ca in cao?

Description : What is the percent composition of calcium ca in cao?

Last Answer : 40g/56g x 100%= 71.43 % - APEX

In Vitamin D poisoning (hyper-vitaminosis) (A) Both serum and urinary “Ca” (B) The serum Ca is low and urinary calcium high (C) The serum “Ca” is increased and urinary “Ca” is normal (D) Both serum and urinary “Ca” are low

Description : In Vitamin D poisoning (hyper-vitaminosis) (A) Both serum and urinary “Ca” (B) The serum Ca is low and urinary calcium high (C) The serum “Ca” is increased and urinary “Ca” is normal (D) Both serum and urinary “Ca” are low

Last Answer : Answer : A

For the irreversible reaction, Ca+ 2C = Ca C2, Δ H°298 = - 60000 J . mole-1. If a system initially containing 2 moles of calcium, 3 moles of carbon and 1 mole of calcium carbide is allowed to react to completion, the heat evolved at 298 K will be (A) 30,000 J (B) 60,000 J (C) 90,000 J (D) 2,40,000 J

Description : For the irreversible reaction, Ca+ 2C = Ca C2, Δ H°298 = - 60000 J . mole-1. If a system initially containing 2 moles of calcium, 3 moles of carbon and 1 mole of calcium carbide is allowed to react to completion, the heat evolved ... will be (A) 30,000 J (B) 60,000 J (C) 90,000 J (D) 2,40,000 J

Last Answer : (C) 90,000 J

Though nitrates and calcium channel blockers are both vasodilators, they are used concurrently in angina pectoris, because: A. They antagonise each other’s side effects B. Nitrates primarily reduce preload while calcium channel blockers primarily reduce after-load C. Nitrates increase coronary flow while calcium channel blockers reduce ca

Description : Though nitrates and calcium channel blockers are both vasodilators, they are used concurrently in angina pectoris, because: A. They antagonise each other's side effects B. Nitrates primarily ... primarily reduce after-load C. Nitrates increase coronary flow while calcium channel blockers reduce ca

Last Answer : B. Nitrates primarily reduce preload while calcium channel blockers primarily reduce after-load

Write a note on the Physical Properties of Calcium Hydroxide (Slaked lime), Ca(OH)2

Description : Write a note on the Physical Properties of Calcium Hydroxide (Slaked lime), Ca(OH)2

Last Answer : It is a white amorphous powder. It is sparingly soluble in water. The aqueous solution is known as lime water and a suspension of slaked lime in water is known as milk of lime. 

How is Calcium Hydroxide (Slaked lime), Ca(OH)2 Prepared?

Description : How is Calcium Hydroxide (Slaked lime), Ca(OH)2 Prepared? 

Last Answer :  Calcium hydroxide is prepared by adding water to quick lime, CaO.

Ca(BrO3)2 (read: C - a, left parenthesis, B - r - O - subscript 3, right parenthesis, subscript 2) is called: w) calcium bromate x) calcium bromite y) calcium dibromite z) calcium bromide

Description : Ca(BrO3)2 (read: C - a, left parenthesis, B - r - O - subscript 3, right parenthesis, subscript 2) is called: w) calcium bromate x) calcium bromite y) calcium dibromite z) calcium bromide

Last Answer : ANSWER: W -- CALCIUM BROMATE

(a) Write electron dot diagram for chlorine (At No. 17) and calcium (At No. 20). Show the formation of calcium chloride by transfer of electrons. (b) Identify the nature of above compound’and explain three physical properties of such compound. -Chemistry

Description : (a) Write electron dot diagram for chlorine (At No. 17) and calcium (At No. 20). Show the formation of calcium chloride by transfer of electrons. (b) Identify the nature of above compound’and explain three physical properties of such compound. -Chemistry

Last Answer : (b) It is ionic compound. Physical properties 1.It is hard and solid. 2.It has high melting and boiling point. 3.It soluble in water.

What is the number of electrons in calcium ?

Description : What is the number of electrons in calcium ?

Last Answer : The number of electrons in calcium is 20 .

How many electrons in calcium have l = 0 ?

Description : How many electrons in calcium have l = 0 ?

Last Answer : How many electrons in calcium have l = 0 ? A. 6 B. 8 C. 10 D. 12

Why does calcium give or take electrons?

Description : Why does calcium give or take electrons?

Last Answer : Calcium give two electrons.

In molecule of calcium sulfide calcium has two valence electron bonds and a sulfur atom has six valence electrons. How many lone pairs of electrons are present in the Lewis structure of calcium?

Description : In molecule of calcium sulfide calcium has two valence electron bonds and a sulfur atom has six valence electrons. How many lone pairs of electrons are present in the Lewis structure of calcium?

Last Answer : What is the answer ?

If two chlorine atoms were to attract electrons from two calcium atoms?

Description : If two chlorine atoms were to attract electrons from two calcium atoms?

Last Answer : Need answer