Beryllium shows covalent Character in its compounds ,Why?

Beryllium shows covalent Character in its compounds ,Why?
by

1 Answer

Answer :

Ans Due to the small size, high ionization energy, and high sublimation energy of beryllium, its lattice and hydration energies are insufficient to provide complete charge separation and the formation of simple Be2+ ions. In all compounds therefore, even BeO and BeF2, there is substantial covalent character in the bonding.
by

Related questions

Beryllium forms covalent compound Why?

Description : Beryllium forms covalent compound Why?

Last Answer : Ans Due to high Ionisation Enthalpy

Is beryllium perchlorate ionic or covalent?

Description : Is beryllium perchlorate ionic or covalent?

Last Answer : Need answer

Beryllium, the first member of the Group 2 metals, shows different behaviour as compared to magnesium and rest of the members what is this properties

Description : Beryllium, the first member of the Group 2 metals, shows different behaviour as compared to magnesium and rest of the members what is this properties

Last Answer : Ans Anomalous Behaviour

with which element Beryllium shows diagonal relation ship?

Description : with which element Beryllium shows diagonal relation ship?

Last Answer : Ans : Al

Lithium and beryllium, shows similarity with which elements .

Description : Lithium and beryllium, shows similarity with which elements . 

Last Answer : Lithium shows similarities to magnesium and beryllium to aluminium in many of their properties. This type of diagonal similarity is commonly referred to as diagonal relationship in the periodic table. 

Do covalent compounds dissolve in water ?

Description : Do covalent compounds dissolve in water ?

Last Answer : Almost all covalent compounds do not dissolve in water, with a few exceptions.

Are organic compounds electrolytic or covalent substances ?

Description : Are organic compounds electrolytic or covalent substances ?

Last Answer : Organic compounds are covalent substances.

Compounds with identical molecular formula but different structures are called - (1) Tetravalent compounds (2) Structural isomers (3) Covalent compounds (4) None of the above

Description : Compounds with identical molecular formula but different structures are called - (1) Tetravalent compounds (2) Structural isomers (3) Covalent compounds (4) None of the above

Last Answer : (2) Structural isomers Explanation: Structures with identical molecular formula but different structures are called structural isomers. Eg: Butane.

Organic compounds are - (1) Covalent compounds (2) Ionic compounds (3) Co-ordination compounds (4) Interstitial compounds

Description : Organic compounds are - (1) Covalent compounds (2) Ionic compounds (3) Co-ordination compounds (4) Interstitial compounds

Last Answer : (1) Covalent compounds Explanation: Organic compounds are always covalent compounds because it is more energetically favorable for carbon to covalently bond. Organic compounds, such as carbohydrates, lipids, proteins and nucleic acids, are all examples of covalent compounds.

Give reason why boron and aluminum tend of form covalent compounds.

Description : Give reason why boron and aluminum tend of form covalent compounds.

Last Answer : Ans. Sum of the three ionization enthalpies of both the elements are very high. Thus they have no tendency to lose electrons to form ionic compound. Instead they form covalent compounds.

Define characteristic of Ionic & covalent compounds.

Description : Define characteristic of Ionic & covalent compounds.

Last Answer : Characteristics Of Ionic Compounds : Physical State : Ionic compounds are solids at room temperature. In crystals the oppositely charged ions are mutually surrounded by each other in orderly ... tetrachloride. Inter Molecular Forces : They have weak intermolecular forces between bonded atoms.

Which of the following compounds contains both io and covalent bonds? w) Calcium Chloride x) Carbon Dioxide y) Calcium Fluoride z) Calcium Sulfate

Description : Which of the following compounds contains both io and covalent bonds? w) Calcium Chloride x) Carbon Dioxide y) Calcium Fluoride z) Calcium Sulfate

Last Answer : ANSWER: Z -- CALCIUM SULFATE

In which of the following compounds is the bonding most covalent? w) NaCl x) F2 y) MgS z) Fe3C

Description : In which of the following compounds is the bonding most covalent? w) NaCl x) F2 y) MgS z) Fe3C

Last Answer : ANSWER: X -- F2

Organic compounds are (1) Covalent compounds (2) Ionic compounds (3) Co-ordination compounds (4) Interstitial compounds

Description : Organic compounds are (1) Covalent compounds (2) Ionic compounds (3) Co-ordination compounds (4) Interstitial compounds

Last Answer : Covalent compounds

Arrange the following in order of the increasing covalent character : MCl,MBr,MF,MI ( Where M=alkali metal)

Description : Arrange the following in order of the increasing covalent character : MCl,MBr,MF,MI ( Where M=alkali metal)

Last Answer : Ans. MF < MCI < MB < MI

When does ionic character develop in covalent bond?

Description : When does ionic character develop in covalent bond?

Last Answer : Ans. When the difference in electro negativity of the combining atom is more than 1.9 it develops 50 % ionic character .

Which rule explains the covalent character of ionic bond ?

Description : Which rule explains the covalent character of ionic bond ?

Last Answer : Ans. Fajan’s Rule

Which of the following compounds has ionic bond. `pi-`bond, co-ordinate bond and covalent bond:-

Description : Which of the following compounds has ionic bond. `pi-`bond, co-ordinate bond and covalent bond:-

Last Answer : Which of the following compounds has ionic bond. `pi-`bond, co-ordinate bond and covalent bond:- A. `HNO_(2)` B. `NaNO_(3)` C. `KNO_(2)` D. `MgCl_(2)`

What this also means covalent compounds?

Description : What this also means covalent compounds?

Last Answer : In a covalent compound electrons are shared between two elements.

What can covalent compounds be formed between?

Description : What can covalent compounds be formed between?

Last Answer : Covalent compounds are formed by sharing of electrons.

Are covalent molecular compounds ductile?

Description : Are covalent molecular compounds ductile?

Last Answer : What is the answer ?

Why do covalent compounds have low melting points?

Description : Why do covalent compounds have low melting points?

Last Answer : Because although the covalent bonds between the elements are strong, there are only weak forces between the molecules so they have low melting points

Why do covalent compounds have low melting points?

Description : Why do covalent compounds have low melting points?

Last Answer : Because although the covalent bonds between the elements are strong, there are only weak forces between the molecules so they have low melting points

Most covalent compounds (a) Behave like electrolytes in the molten state (b) Have high melting and boiling points (c) Are hard substances because of strong covalent bonds (d) Are more soluble in non-polar solvents than in polar solvents

Description : Most covalent compounds (a) Behave like electrolytes in the molten state (b) Have high melting and boiling points (c) Are hard substances because of strong covalent bonds (d) Are more soluble in non-polar solvents than in polar solvents

Last Answer : Ans:(d)

Covalent bonds are mainly found in (a) Organic compounds (b) Inorganic compounds (c) Electrolytes (d) None of the above

Description : Covalent bonds are mainly found in (a) Organic compounds (b) Inorganic compounds (c) Electrolytes (d) None of the above

Last Answer : Ans:(a)

Why are covalent compounds poor conductors of electricity? (1) Due to the presence of charged particles. (2) Due to the absence of charged particles. (3) Due to the presence of a triple bond. (4) None of the above

Description : Why are covalent compounds poor conductors of electricity? (1) Due to the presence of charged particles. (2) Due to the absence of charged particles. (3) Due to the presence of a triple bond. (4) None of the above

Last Answer : (2) Due to the absence of charged particles. Explanation: In a covalent compound, electrons are shared between atoms. This leaves no free electrons and hence there and no charged particles. This leads to covalent compounds being poor conductors of electricity.

Which one of the following pairs is matched correctly? a. Ions - covalent bonds b. Carbon - organic compounds c. Glucose - enzyme d. Thymine - amino acid

Description : Which one of the following pairs is matched correctly? a. Ions - covalent bonds b. Carbon - organic compounds c. Glucose - enzyme d. Thymine - amino acid

Last Answer : b. Carbon - organic compounds

Which of the following halides has the maximum covalent character ?

Description : Which of the following halides has the maximum covalent character ?

Last Answer : Which of the following halides has the maximum covalent character ? A. LiI B. NaI C. KI D. CsI

What is the physical condition of beryllium ?

Description : What is the physical condition of beryllium ?

Last Answer : The physical condition of beryllium is gray.

What is the compatibility of beryllium ?

Description : What is the compatibility of beryllium ?

Last Answer : beryllium valence 2 .

What is the boiling point of beryllium ?

Description : What is the boiling point of beryllium ?

Last Answer : The boiling point of beryllium is 2990 degrees Celsius.

What is the melting point of beryllium ?

Description : What is the melting point of beryllium ?

Last Answer : The melting point of beryllium is 1283 degrees Celsius.

What is the relative atomic mass of beryllium ?

Description : What is the relative atomic mass of beryllium ?

Last Answer : : Relative atomic mass of beryllium 9 .

What is the atomic number of beryllium ?

Description : What is the atomic number of beryllium ?

Last Answer : The atomic number of beryllium is four.

What is the symbol of beryllium ?

Description : What is the symbol of beryllium ?

Last Answer : Symbol of beryllium Be

Why is Be (beryllium) called clay metal ?

Description : Why is Be (beryllium) called clay metal ?

Last Answer : The second class elements of the periodic table are called alkali metals. These elements are found in the soil as various compounds.

What is the sign of beryllium ?

Description : What is the sign of beryllium ?

Last Answer : Sign of beryllium: Be.

Atomic number of which of the following elements is greater than that of Fluorine? (1) Sodium (2) Beryllium (3) Nitrogen (4) Boron

Description : Atomic number of which of the following elements is greater than that of Fluorine? (1) Sodium (2) Beryllium (3) Nitrogen (4) Boron

Last Answer : (1) Sodium Explanation: Sodium has higher atomic number (11) than Fluorine (9) The atomic number of Beryllium and Nitrogen are 4 and 7 respectively.

What is the element required for solar energy conversion? (1) Beryllium (2) Tantalum (3) Silicon (4) Ultra pure carbon

Description : What is the element required for solar energy conversion? (1) Beryllium (2) Tantalum (3) Silicon (4) Ultra pure carbon

Last Answer : (3) Silicon Explanation: The most prevalent bulk material for solar cells is crystalline silicon (abbreviated as a group as c-Si), also known as "solar grade silicon". Bulk silicon is ... into multiple categories according to crystallinity and crystal size in the resulting ingot, ribbon, or wafer.

Manganite is an ore/mineral of ______. (1) Beryllium (2) Chromium (3) Manganese (4) Copper

Description : Manganite is an ore/mineral of ______. (1) Beryllium (2) Chromium (3) Manganese (4) Copper

Last Answer : (3) Manganese Explanation: Manganite is an ore mineral of manganese. As a manganese ore, it ranks after pyrolusite and romanechite.

Explain the Reaction of Beryllium chloride with water

Description : Explain the Reaction of Beryllium chloride with water

Last Answer : Ans Beryllium chloride reacts vigorously and exothermically with water with the evolution of acidic, steamy hydrogen chloride gas. This is typical of covalent chlorides.In the first instance, it reacts ... chloride ions can remove one or more of these hydrogen ions to produce hydrogen chloride gas.

Mention the Diagonal Relationship between Beryllium and Aluminium

Description : Mention the Diagonal Relationship between Beryllium and Aluminium

Last Answer : The ionic radius of Be2+ is estimated to be 31 pm; the charge/radius ratio is nearly the same as that of the Al3+ ion. Hence beryllium resembles aluminium in some ways. Some of the similarities are: ... . (iv) Beryllium and aluminium ions have strong tendency to form complexes, BeF4 2-, AlF6 3- .

Mention the anomalous behaviour of beryllium

Description : Mention the anomalous behaviour of beryllium

Last Answer : Ans Beryllium, the first member of the Group 2 metals, shows anomalous behaviour as compared to magnesium and rest of the members i) Beryllium has exceptionally small atomic and ionic sizes and ... of beryllium, unlike the hydroxides of oother elements in the group, are amphoteric in nature.

Beryllium chloride, BeCl2, melts at 405°C and boils at 520°C. That compares with 714°C and 1412°C for magnesium chloride.Give reason ?

Description : Beryllium chloride, BeCl2, melts at 405°C and boils at 520°C. That compares with 714°C and 1412°C for magnesium chloride.Give reason ?

Last Answer : Ans Be forms covalent compounds

The chlorides of both beryllium and aluminium are Lewis acid Why ?

Description : The chlorides of both beryllium and aluminium are Lewis acid Why ?

Last Answer : Ans Incomplete octate.

Aluminium, Beryllium is not readily attacked by acids, Why ?

Description : Aluminium, Beryllium is not readily attacked by acids, Why ?

Last Answer : Ans :Because of the presence of an oxide film.

What is the Reason for the anomalous behaviour of beryllium ?

Description : What is the Reason for the anomalous behaviour of beryllium ?

Last Answer : Ans The properties of berrylium the first member of the alkaline earth metal, differ from the rest of the member. Its is mainly because of Its small size and high polarizing power. Relatively ... energy as compared to other members. Absence of vacant d - orbitals in its valence shell.

Beryllium does not show coordination more than four, Why ?

Description : Beryllium does not show coordination more than four, Why ?

Last Answer : Ans Due absence of d Orbitals

Mention the Diagonal Relationship between Beryllium and Aluminium

Description : Mention the Diagonal Relationship between Beryllium and Aluminium 

Last Answer : The ionic radius of Be2+ is estimated to be 31 pm; the charge/radius ratio is nearly the same as that of the Al3+ ion. Hence beryllium resembles aluminium in some ways. Some of the similarities are: ... (iv) Beryllium and aluminium ions have strong tendency to form complexes, BeF4 2-, AlF6 3- . 

Mention the anomalous behaviour of beryllium

Description : Mention the anomalous behaviour of beryllium

Last Answer : Beryllium, the first member of the Group 2 metals, shows anomalous behaviour as compared to magnesium and rest of the members. Further, it shows diagonal relationship to aluminium (i) Beryllium has ... of beryllium, unlike the hydroxides of other elements in the group, are  amphoteric in nature.