What Members of which group of elements lose 2 electrons to form cations with a plus 2 charge?

What Members of which group of elements lose 2 electrons to form cations with a plus 2 charge?
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Which one of the following statements concerning elements in the Periodic Table is correct? A Elements of the same group all have the same number of electrons in the outermost occupied electron shell. B Elements of Group 16 occur as cations in ionic compounds. C Oxides of elements in Groups 16 and 17 are basic. D The halogens (Group 17) are all gases at room temperature. E The Group 13 elements are all metals.

Description : Which one of the following statements concerning elements in the Periodic Table is correct? A Elements of the same group all have the same number of electrons in the outermost occupied electron shell. B ... (Group 17) are all gases at room temperature. E The Group 13 elements are all metals.

Last Answer : D) Are compounds that exhibit both metallic & non-metallic properties to some extent and are exemplified by elements like germanium, silicon & boron

Pick out the correct statement. (A) Loss of electrons from neutral atoms produces negative ions (B) The radius of nucleus & atomic size are of the order of 10 -12 cm & 10 - 8 cm respectively (C) Gain of electrons by neutral atoms form cations

Description : Pick out the correct statement. (A) Loss of electrons from neutral atoms produces negative ions (B) The radius of nucleus & atomic size are of the order of 10 -12 cm & 10 - 8 cm respectively (C) Gain of electrons by neutral atoms form cations

Last Answer : (B) The radius of nucleus & atomic size are of the order of 10 -12 cm & 10 - 8 cm respectivel

In \( III ^{ rd } \) group of salt analysis for cations \( NH _{4} Cl \) and \( NH _{4} OH \) are added as group reagents. Which of the following can be used instead of \( NH _{4} Cl \) ?(a) \( NaCl \)(b) \( \left( NH _{4}\right)_{2} SO _{4} \)(c) \( \left( NH _{4}\right)_{2} C _{2} O _{4} \)(d) \( NH _{4} NO _{3} \)

Description : In \( III ^{ rd } \) group of salt analysis for cations \( NH _{4} Cl \) and \( NH _{4} OH \) are added as group reagents. Which of the following can be used instead of \( NH _{4} Cl \) ?(a) \( NaCl \)(b) \( \left( NH _ ... \)(c) \( \left( NH _{4}\right)_{2} C _{2} O _{4} \)(d) \( NH _{4} NO _{3} \)

Last Answer : In \( III ^{ rd } \) group of salt analysis for cations \( NH _{4} Cl \) and \( NH _{4} OH \) are added as ... O _{4} \) (d) \( NH _{4} NO _{3} \)

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.

If the element sulfur S was to lose two electrons per atom what would the net ionic charge be?

Description : If the element sulfur S was to lose two electrons per atom what would the net ionic charge be?

Last Answer : The charge will be +2.

Which one of the following elements exhibits the greatest tendency to lose electrons? (1) Fluorine (2) Lithium (3) Oxygen (4) Zine

Description : Which one of the following elements exhibits the greatest tendency to lose electrons? (1) Fluorine (2) Lithium (3) Oxygen (4) Zine

Last Answer : (2) Lithium Explanation: Alkali metals such as Lithium are the most electropositive elements in the periodic table. As alkali metals have low ionization energies, they have a great tendency to lose electrons forming unipositive ions.

The reactivity of an ionic compound element is explained as its tendency to attain noble gas configuration. How do the elements do so? (1) Lose electrons (2) Gain electrons (3) Both are correct (4) Both are incorrect

Description : The reactivity of an ionic compound element is explained as its tendency to attain noble gas configuration. How do the elements do so? (1) Lose electrons (2) Gain electrons (3) Both are correct (4) Both are incorrect

Last Answer : (3) Both are correct Explanation: The reactivity of elements is explained as their tendency to attain a completely filled outer shell. This is called as having attained noble gas configuration. Once noble gas configuration is reached, the elements lose their reactivity.

The elements which lose electrons in chemical reaction are called?

Description : The elements which lose electrons in chemical reaction are called?

Last Answer : Metals

Elements that conduct electricity and heat which tends to lose electrons are called?

Description : Elements that conduct electricity and heat which tends to lose electrons are called?

Last Answer : Metals

Which one of the following elements exhibits the greatest tendency to lose electrons ? (1) Fluorine (2) Lithium (3) Oxygen (4) Zinc

Description : Which one of the following elements exhibits the greatest tendency to lose electrons ? (1) Fluorine (2) Lithium (3) Oxygen (4) Zinc

Last Answer : Lithium

As one moves down a group of the periodic table, the tendency to lose electrons does which of the following? w) increase x) decrease y) stay the same

Description : As one moves down a group of the periodic table, the tendency to lose electrons does which of the following? w) increase x) decrease y) stay the same

Last Answer : ANSWER: W -- INCREASE

When any solution passess through a cation exchange resin that is in acidic form, H ion of the resin is replaced by cations of the solution. A solutio

Description : When any solution passess through a cation exchange resin that is in acidic form, H ion of the resin is replaced by cations of the solution. A solutio

Last Answer : When any solution passess through a cation exchange resin that is in acidic form, H ion ... D. tetraaquadichloro chromium (III) chloride dihydrate.

Why can transition metals form cations with a variety of charges?

Description : Why can transition metals form cations with a variety of charges?

Last Answer : Transition metals often form ions without complete octets that'swhy all the stable ions are all cations. You can also tell thatthey form cations because some of the transition metals formcolored compounds and give off light. Light is only given off bycations, not anions.

Why can transition metals form cations with a variety of charges?

Description : Why can transition metals form cations with a variety of charges?

Last Answer : Transition metals often form ions without complete octets that'swhy all the stable ions are all cations. You can also tell thatthey form cations because some of the transition metals formcolored compounds and give off light. Light is only given off bycations, not anions.

a) What is meant by periodicity in properties of elements with reference to the periodic table? (b) Why do all the elements of the same group have similar properties? (c) How will the tendency to gain electrons change as we go from left to right across a period? Why? -Science

Description : a) What is meant by periodicity in properties of elements with reference to the periodic table? (b) Why do all the elements of the same group have similar properties? (c) How will the tendency to gain electrons change as we go from left to right across a period? Why? -Science

Last Answer : (a) The repetition of same properties after definite interval is called periodicity in properties. (b) It is because they have same valence electrons therefore, have similar properties. (c) ... to right in a period because atomic size goes on decreasing and effective nuclear charge increases.

What are the valence electrons? For s-block and p-block elements show that number of valence electrons is equal to its group number.

Description : What are the valence electrons? For s-block and p-block elements show that number of valence electrons is equal to its group number.

Last Answer : What are the valence electrons? For s-block and p-block elements show that number of valence electrons is equal to its group number.

Elements, like calcium, located toward the top of a group have a high attraction for their valence electrons because they have a _?

Description : Elements, like calcium, located toward the top of a group have a high attraction for their valence electrons because they have a _?

Last Answer : small atomic radius.

Elements, like calcium, located toward the top of a group have a high attraction for their valence electrons because they have a _?

Description : Elements, like calcium, located toward the top of a group have a high attraction for their valence electrons because they have a _?

Last Answer : small atomic radius.

From the elements: Cl, Br, F, O, Al, C, Li, Cs and Xe; choose the following: (a) The element with highest negative electron gain enthalpy. (b) The element with lowest ionization enthalpy. (c) The element with smallest ionic radius. (d) The element with six electrons in the valence shell. (e) The element which is a liquid at room temperature. (f)The element which belongs to zero group. (g) The elements which forms largest number of compounds.

Description : From the elements: Cl, Br, F, O, Al, C, Li, Cs and Xe; choose the following: (a) The element with highest negative electron gain enthalpy. (b) The element with lowest ionization enthalpy. ( ... . (f)The element which belongs to zero group. (g) The elements which forms largest number of compounds.

Last Answer : Ans. (a). The element chlorine (Cl) has the highest negative electron gain enthalpy. (b). The element cesium (Cs) has lowest ionization enthalpy. (c). The element fluorine F has lowest atomic radius. (d ... zero group (or group 18). (g). The element carbon (C) forms the largest number of compounds.

What is the correct order of decreasing stability of the following cations ? `overset(oplus)underset(CH_(3)-CH-CH_(3)` II `overset(oplus)underset(CH_(

Description : What is the correct order of decreasing stability of the following cations ? `overset(oplus)underset(CH_(3)-CH-CH_(3)` II `overset(oplus)underset(CH_(

Last Answer : What is the correct order of decreasing stability of the following cations ? `overset(oplus)underset(CH_(3)-CH-CH_( ... gt I gt III D. II gt III gt I

Divalent cations are generally eliminated in marine fishes through

Description : Divalent cations are generally eliminated in marine fishes through

Last Answer : Divalent cations are generally eliminated in marine fishes through A. Gill membrane B. Anal membrane C. Fecal matter D. Oral membrane

Why do cations emit colors when heated in a Bunsen burner flame?

Description : Why do cations emit colors when heated in a Bunsen burner flame?

Last Answer : Atoms were excited by heating, electrons move to a higher energy level and as these electrons fall back to a lower energy level, the specific radiation for the element is emitted.

A compound composed of cations and anions is called a?

Description : A compound composed of cations and anions is called a?

Last Answer : covalent compound

Anion gap in plasma is because (A) Of differential distribution of ions across cell membranes (B) Cations outnumber anions in plasma (C) Anions outnumber cations in plasma (D) Of unmeasured anions in plasma

Description : Anion gap in plasma is because (A) Of differential distribution of ions across cell membranes (B) Cations outnumber anions in plasma (C) Anions outnumber cations in plasma (D) Of unmeasured anions in plasma

Last Answer : Answer : B

Anion gap is the difference in the plasma concentrations of (A) (Chloride) – (Bicarbonate) (B) (Sodium) – (Chloride) (C) (Sodium + Potassium) – (Chloride + Bicarbonate) (D) (Sum of cations) – (Sum of anions)

Description : Anion gap is the difference in the plasma concentrations of (A) (Chloride) – (Bicarbonate) (B) (Sodium) – (Chloride) (C) (Sodium + Potassium) – (Chloride + Bicarbonate) (D) (Sum of cations) – (Sum of anions)

Last Answer : Answer : C

One of the principal cations of soft tissue and body fluids is (A) Mg (B) S (C) Mn (D) Co

Description : One of the principal cations of soft tissue and body fluids is (A) Mg (B) S (C) Mn (D) Co

Last Answer : Answer : A

Which of the following statements about extracellular fluid are true? A. The total extracellular fluid volume represents 40% of the body weight. B. The plasma volume constitutes one fourth of the total extracellular fluid volume. C. Potassium is the principal cation in extracellular fluid. D. The protein content of the plasma produces a lower concentration of cations than in the interstitial fluid. E. The interstitial fluid equilibrates slowly with the other body compartments.

Description : Which of the following statements about extracellular fluid are true? A. The total extracellular fluid volume represents 40% of the body weight. B. The plasma volume constitutes one fourth ... the interstitial fluid. E. The interstitial fluid equilibrates slowly with the other body compartments.

Last Answer : Answer: B DISCUSSION: The total extracellular fluid volume represents 20% of body weight. The plasma volume is approximately 5% of body weight. Sodium is the principal cation. The ... fluid and cerebrospinal fluid, the majority of the interstitial fluid exists as a rapidly equilibrating component

During electrolysis, the cations and anions of the electrolyte are 1. Discharged 2. Hydrolysed 3. In motion 4. Hydrated The correct answers are: (a) 1 and 3 (b) 2 and 4 (c) 3 and 4 (d) 1 and 2

Description : During electrolysis, the cations and anions of the electrolyte are 1. Discharged 2. Hydrolysed 3. In motion 4. Hydrated The correct answers are: (a) 1 and 3 (b) 2 and 4 (c) 3 and 4 (d) 1 and 2

Last Answer : Ans:(a)

Atoms having the same number of protons but different number of neutrons are called : (1) Isotopes (2) Cations (3) Higgs-boson (4) Anions .

Description : Atoms having the same number of protons but different number of neutrons are called : (1) Isotopes (2) Cations (3) Higgs-boson (4) Anions .

Last Answer : (1) Isotopes Explanation: Atoms that have the same number of protons but different numbers of neutrons are called isotopes. For example, carbon-12, carbon13 and carbon-14 are three isotopes of the element ... has 6 protons, so that the neutron numbers of these isotopes are 6, 7 and 8 respectively.

Ionic compounds containing cations (+ve ion) and anions (-ve ion) are?

Description : Ionic compounds containing cations (+ve ion) and anions (-ve ion) are?

Last Answer : Salt

What are cations?

Description : What are cations?

Last Answer : Cations are atoms that have lost an electron to become positively charged.

Explain why cations are smaller and anions are larger in size than their parent atom.

Description : Explain why cations are smaller and anions are larger in size than their parent atom.

Last Answer : Ans.The ionic radius of cation is always smaller than the parent atom because the loss of one or more electrons increases the effective nuclear charge. As a result, the force of attraction of ... the force of attraction of the nucleus for the electrons decreases and hence the ionic radii increases.

The five kingdoms of Whittaker’s classifi- cations are?

Description : The five kingdoms of Whittaker’s classifi- cations are?

Last Answer : Kingdom Monera; Kingdom Protista; Kingdom  Fungi; Kingdom Plantae; Kingdom Animalia

Negatively charged ions are called a. anions b. cations c. both d. none of them

Description : Negatively charged ions are called a. anions b. cations c. both d. none of them

Last Answer : anions

Positively charged ions are called a. anions b. cations c. both d. none of them

Description : Positively charged ions are called a. anions b. cations c. both d. none of them

Last Answer : cations

Active and passive transports across cell membrane differ in (a) passive transport is nonselective(b) passive transport is along the concentration gradient while active transport is due to metabolic energy (c) active transport is more rapid (d) passive transport is confined to anions while active transport is confined to cations.

Description : Active and passive transports across cell membrane differ in (a) passive transport is nonselective (b) passive transport is along the concentration gradient while active transport is due to metabolic ... (d) passive transport is confined to anions while active transport is confined to cations.

Last Answer : (b) passive transport is along the concentration gradient while active transport is due to metabolic energy

Zeolite is a/an (A) Naturally occuring clay which is capable of exchanging cations (B) Abrasive material (C) Catalyst used in shift conversion (D) None of these

Description : Zeolite is a/an (A) Naturally occuring clay which is capable of exchanging cations (B) Abrasive material (C) Catalyst used in shift conversion (D) None of these

Last Answer : (A) Naturally occuring clay which is capable of exchanging cations

Very strongly acidic cations have pKa values -------. a.between11.5 – 14.0 b. between6.0-11.5 c. between1.0-6.0 d. below -4.0

Description : Very strongly acidic cations have pKa values -------. a.between11.5 – 14.0 b. between6.0-11.5 c. between1.0-6.0 d. below -4.0

Last Answer : d. below -4.0

Atoms having the same number of protons but different number of neutrons are called : (1) Isotopes (2) Cations (3) Higgs-boson (4) Anions

Description : Atoms having the same number of protons but different number of neutrons are called : (1) Isotopes (2) Cations (3) Higgs-boson (4) Anions

Last Answer : Isotopes

Name the group in which members together called representative elements.

Description : Name the group in which members together called representative elements.

Last Answer : Ans: S and P block elements

What charge do group 13(3A) elements when in an ionic bond?

Description : What charge do group 13(3A) elements when in an ionic bond?

Last Answer : The valence is 3.

How many electrons are in a Ba 2 plus ion?

Description : How many electrons are in a Ba 2 plus ion?

Last Answer : Need answer

What is the total number of electrons present in an Mg 2 plus cation?

Description : What is the total number of electrons present in an Mg 2 plus cation?

Last Answer : The Mg2 plus cation has 10 electrons.

The mass number of an element is equal to the number of __________ in the nucleus. (A) Electrons (B) Neutrons (C) Protons (D) Neutrons plus protons (i.e., nucleons)

Description : The mass number of an element is equal to the number of __________ in the nucleus. (A) Electrons (B) Neutrons (C) Protons (D) Neutrons plus protons (i.e., nucleons)

Last Answer : (D) Neutrons plus protons (i.e., nucleons)

The chemical reactivity of noble gases involves the loss of electrons and hence it can form compounds with highly electronegative elements like F and

Description : The chemical reactivity of noble gases involves the loss of electrons and hence it can form compounds with highly electronegative elements like F and

Last Answer : The chemical reactivity of noble gases involves the loss of electrons and hence it can form compounds with ... )d` and linear D. `sp` and linear

The chemical reactivity of noble gases involves the loss of electrons and hence it can form compounds with highly electronegative elements like F and

Description : The chemical reactivity of noble gases involves the loss of electrons and hence it can form compounds with highly electronegative elements like F and

Last Answer : The chemical reactivity of noble gases involves the loss of electrons and hence it can form compounds with highly ... D. `sp^(3)d^(2)` & 2

The chemical reactivity of noble gases involves the loss of electrons and hence it can form compounds with highly electronegative elements like F and

Description : The chemical reactivity of noble gases involves the loss of electrons and hence it can form compounds with highly electronegative elements like F and

Last Answer : The chemical reactivity of noble gases involves the loss of electrons and hence it can form compounds with highly ... A. zero B. 2 C. 6 D. 8

How many electrons does selenium gain or lose?

Description : How many electrons does selenium gain or lose?

Last Answer : Selenium forms covalent bonds.

How many electrons does selenium gain or lose?

Description : How many electrons does selenium gain or lose?

Last Answer : Selenium forms covalent bonds.

Atoms like sodium and lithium often lose electrons, which makes them?

Description : Atoms like sodium and lithium often lose electrons, which makes them?

Last Answer : cations