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

Aluminium, Beryllium is not readily attacked by acids, Why ?
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Ans :Because of the presence of an oxide film.
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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- .

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.

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- . 

Which metal is extracted from sea water? (1) Potassium (2) Magnesium (3) Aluminium (4) Beryllium

Description : Which metal is extracted from sea water? (1) Potassium (2) Magnesium (3) Aluminium (4) Beryllium 

Last Answer : Magnesium

On bromination, the electron rich phenoxide ion will be attacked most readily

Description : On bromination, the electron rich phenoxide ion will be attacked most readily

Last Answer : On bromination, the electron rich phenoxide ion will be attacked most readily A. on the negatively ... carbon atom D. on the ortho carbon atom.

Synthetic rubber (A) Deforms, if stretched to double of its original dimension (B) Is brittle at low temperature (C) Is softer at higher temperature (D) Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases

Description : Synthetic rubber (A) Deforms, if stretched to double of its original dimension (B) Is brittle at low temperature (C) Is softer at higher temperature (D) Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases

Last Answer : (D) Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases

Acetyl-CoA is the principal building block of fatty acids. It is produced within the mitochondria and does not diffuse readily into cytosol. The availability of acetyl CoA involves (A) Carnitine acyl transferase (B) Pyruvate dehydrogenase (C) Citrate lyase (D) Thiolase

Description : Acetyl-CoA is the principal building block of fatty acids. It is produced within the mitochondria and does not diffuse readily into cytosol. The availability of acetyl CoA involves (A) Carnitine acyl transferase (B) Pyruvate dehydrogenase (C) Citrate lyase (D) Thiolase

Last Answer : Answer : C

Hastelloy C is a good material of construction in chemical process industry, since it is (A) Highly corrosion resistant and is readily fabricated (B) Relatively inexpensive although it can be fabricated with some difficulty (C) Corrosion resistant to most alkalis, particularly because of its copper content (D) Light and resists attack by acids

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Last Answer : (D) Light and resists attack by acids

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 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 shows covalent Character in its compounds ,Why?

Description : Beryllium shows covalent Character in its compounds ,Why?

Last 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 ... compounds therefore, even BeO and BeF2, there is substantial covalent character in the bonding.

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

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

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Last Answer : Ans Anomalous Behaviour

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

Beryllium forms covalent compound Why?

Description : Beryllium forms covalent compound Why?

Last Answer : Ans Due to high Ionisation Enthalpy

with which element Beryllium shows diagonal relation ship?

Description : with which element Beryllium shows diagonal relation ship?

Last Answer : Ans : Al

Mention the anomalous behaviour of beryllium

Description : Mention the anomalous behaviour of beryllium

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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. 

Which one of the following elements has valence electrons in the n = 3 shell? A beryllium B oxygen C silicon D neon E hydrogen

Description : Which one of the following elements has valence electrons in the n = 3 shell? A beryllium B oxygen C silicon D neon E hydrogen

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Which of the following elements is not an alkaline earth metal? w) beryllium x) barium y) calcium z) rubidium

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Which of the following elements forms a tetrahedra structure? w) carbon x) beryllium y) boron z) fluorine

Description : Which of the following elements forms a tetrahedra structure? w) carbon x) beryllium y) boron z) fluorine

Last Answer : ANSWER: W -- CARBON

Which of the following is the element represented by the symbol B? w)Barium x)Bismuth y)Boron z)Beryllium

Description : Which of the following is the element represented by the symbol B? w)Barium x)Bismuth y)Boron z)Beryllium

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

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Which will be adsorbed more readily on the surface of charcoal and why NH3 or CO2?

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