What is the melting point of 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.

Which element behaves chemically both as metal and nonmetal? (1) Argon (2) Boron (3) Xenon (4) Carbon

Description : Which element behaves chemically both as metal and nonmetal? (1) Argon (2) Boron (3) Xenon (4) Carbon

Last Answer : (2) Boron Explanation: Some elements behave chemically both as metals and nonmetals, and are called metalloids. Their examples include Boron, Silicon, Germanium and Antimony. Elements which are neither metals nor nonmetals are called Noble Gases.

Which of the following can be used to absorb neutrons to control the chain reaction during nuclear fission? (1) Boron (2) Heavy water (3) Uranium (4) Plutonium

Description : Which of the following can be used to absorb neutrons to control the chain reaction during nuclear fission? (1) Boron (2) Heavy water (3) Uranium (4) Plutonium

Last Answer : (1) Boron Explanation: Boron shielding is used as a control for nuclear reactors, taking advantage of its high cross-section for neutron capture. Elemental boron is rare and ... aluminium. Crystalline boron is chemicallyinert and resistant to attack by boiling hydrofluoric or hydrochloric acid.

wo elements which are used to absorb neutrons to control the chain reaction during nuclear fission are - (1) Boron and Cadmium (2) Boron and Plutonium (3) Cadmium and Uranium (4) Uranium and Boron

Description : wo elements which are used to absorb neutrons to control the chain reaction during nuclear fission are - (1) Boron and Cadmium (2) Boron and Plutonium (3) Cadmium and Uranium (4) Uranium and Boron

Last Answer : (1) Boron and Cadmium Explanation: Since the continued chain reaction of a nuclear fission reactor depends upon at least one neutron from each fission being absorbed by another fissionable nucleus, the ... and then the control rods are slowly lifted until a chain reaction can just be sustained.

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.

why does boron form stable electron deficient compounds?

Description : why does boron form stable electron deficient compounds?

Last Answer : Ansboron has three electrons in its valance shell that boron show three electrons with other element and form an electron deficient compound

why is boron used in nuclear reactions?

Description : why is boron used in nuclear reactions?

Last Answer : Ansbecause boron can absorb neutrons.

What are the real world applications of boron family?

Description : What are the real world applications of boron family?

Last Answer : Ans. Boron compounds are being evaluated for treating arthritis. The alloys of aluminum are used in the construction of aircraft and rockets. Gallium is used to dope ... selenium rectifiers, gamma radiation detection equipment, and infrared radiation detection and transmission equipment.

Name non-metal of Boron Family .What is the reason for its non-metallic behavior?

Description : Name non-metal of Boron Family .What is the reason for its non-metallic behavior?

Last Answer : Ans Boron. Because of its small size ,high ionization enthalpy and comparatively high electronegativity.

What are two isotopic forms of boron?

Description : What are two isotopic forms of boron?

Last Answer : Ans: B(10,5) and B(11,5).

Write the three crystalline forms in which Boron exist.

Description : Write the three crystalline forms in which Boron exist.

Last Answer : Ans.a) Prismatic Borax (Na2B4O7.10H2O) b) Octahedral Borax (Na2B4O7.5H2O) c) Anhydrous Sodium tetra borate (Na2B4O7

What accounts for the formation of Boron Hydrides?

Description : What accounts for the formation of Boron Hydrides?

Last Answer : Ans. Because of small size of both B & H forms stable compound called Boron Hydrides.

Which element of Boron family is a metalloid?

Description : Which element of Boron family is a metalloid?

Last Answer : Ans. Boron

Which element of Boron Family is used to prevent oxidation?

Description : Which element of Boron Family is used to prevent oxidation?

Last Answer : Ans.Aluminum

What are some uses of Boron Compound?

Description : What are some uses of Boron Compound?

Last Answer : Ans.Adhesives, cement, disinfectants, fertilizers, etc.

Which of the following groups of elements have an OUTER ELECTRONIC configuration of S-2-P-2? w) halogens x) Nitrogen-Phosphorus Group y) Carbon-Silicon Group z) Boron-Aluminum Group

Description : Which of the following groups of elements have an OUTER ELECTRONIC configuration of S-2-P-2? w) halogens x) Nitrogen-Phosphorus Group y) Carbon-Silicon Group z) Boron-Aluminum Group

Last Answer : ANSWER: Y -- CARBON-SILICON GROUP

Which of the following is not a covalent network solid? w) silicon dioxide x) silicon oxide y) boron nitrate z) sodium oxide

Description : Which of the following is not a covalent network solid? w) silicon dioxide x) silicon oxide y) boron nitrate z) sodium oxide

Last Answer : ANSWER: D -- SODIUM OXIDE

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

It is believed that carbon-14 in nature is slowly generated by the action of: w) protons on carbon-12 x) electrons on hydrogen y) cosmic rays on boron z) neutrons on nitrogen

Description : It is believed that carbon-14 in nature is slowly generated by the action of: w) protons on carbon-12 x) electrons on hydrogen y) cosmic rays on boron z) neutrons on nitrogen

Last Answer : ANSWER: Z -- NEUTRONS ON NITROGEN

Which of the following would have the largest THIR ionization energy? Is it: w) Boron x) Carbon y) Nitrogen z) Magnesium

Description : Which of the following would have the largest THIR ionization energy? Is it: w) Boron x) Carbon y) Nitrogen z) Magnesium

Last Answer : ANSWER: Z -- MAGNESIUM

List the following atoms in order of increasing electron affinity: oxygen, boron, and fluorine.

Description : List the following atoms in order of increasing electron affinity: oxygen, boron, and fluorine.

Last Answer : ANSWER: (1) BORON, (2) OXYGEN, (3) FLUORINE

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

Last Answer : ANSWER: Y -- BORON

Which of the following is NOT a physical property of crystalline boron? w) brown color x) diamond hardness y) brittleness z) high electrical resistance

Description : Which of the following is NOT a physical property of crystalline boron? w) brown color x) diamond hardness y) brittleness z) high electrical resistance

Last Answer : ANSWER: W -- BROWN COLOR (Crystalline boron is transparent.)

Which element behaves chemically both as metal and nonmetal ? (1) Argon (2) Boron (3) Xenon (4) Carbon

Description : Which element behaves chemically both as metal and nonmetal ? (1) Argon (2) Boron (3) Xenon (4) Carbon

Last Answer : Boron

Which of the following can be used to absorb neutrons to control the chain reaction during nuclear fission ? (1) Boron (2) Heavy water (3) Uranium (4) Plutonium

Description : Which of the following can be used to absorb neutrons to control the chain reaction during nuclear fission ? (1) Boron (2) Heavy water (3) Uranium (4) Plutonium

Last Answer : Boron

Two elements which are used to absorb neutrons to control the chain reaction during nuclear fission are (1) Boron and Cadmium (2) Boron and Plutonium (3) Cadmium and Uranium (4) Uranium and Boron

Description : Two elements which are used to absorb neutrons to control the chain reaction during nuclear fission are (1) Boron and Cadmium (2) Boron and Plutonium (3) Cadmium and Uranium (4) Uranium and Boron

Last Answer : Boron and Cadmium

What is the melting point of titanium ?

Description : What is the melting point of titanium ?

Last Answer : Titanium has a melting point of 1677 degrees Celsius.

What is the melting point of scandium ?

Description : What is the melting point of scandium ?

Last Answer : Scandium has a melting point of 1541 degrees Celsius.

What is the melting point of helium ?

Description : What is the melting point of helium ?

Last Answer : The melting point of helium is minus 272 degrees Celsius.

What is the melting point of hydrogen ?

Description : What is the melting point of hydrogen ?

Last Answer : The melting point of hydrogen is minus 259 degrees Celsius.

What is the melting point of calcium ?

Description : What is the melting point of calcium ?

Last Answer : The melting point of calcium is 848 degrees Celsius.

What is the melting point of potassium ?

Description : What is the melting point of potassium ?

Last Answer : The melting point of potassium is 64 degrees Celsius.

What is the melting point of argon ?

Description : What is the melting point of argon ?

Last Answer : Argon melting point - 189 degrees Celsius.

What is the melting point of chlorine ?

Description : What is the melting point of chlorine ?

Last Answer : Melting point of chlorine - 101 degree Celsius.

What is the melting point of sulfur ?

Description : What is the melting point of sulfur ?

Last Answer : The melting point of sulfur is 113 degrees Celsius.

What is the melting point of phosphorus ?

Description : What is the melting point of phosphorus ?

Last Answer : The melting point of phosphorus is 44 degrees Celsius.

What is the melting point of silicon ?

Description : What is the melting point of silicon ?

Last Answer : Silicon has a melting point of 1420 degrees Celsius.

What is the melting point of aluminum ?

Description : What is the melting point of aluminum ?

Last Answer : Aluminum has a melting point of 660 degrees Celsius.

What is the melting point of magnesium ?

Description : What is the melting point of magnesium ?

Last Answer : Magnesium has a melting point of 650 degrees Celsius.

What is the melting point of sodium ?

Description : What is the melting point of sodium ?

Last Answer : The melting point of sodium is 98 degrees Celsius.

What is the melting point of neon ?

Description : What is the melting point of neon ?

Last Answer : Neon melting point - 249 degrees Celsius.

What is the melting point of fluorine ?

Description : What is the melting point of fluorine ?

Last Answer : Melting point of fluorine - 220 সেল C.

What is the melting point of boron ?

Please log in or register to add a comment.

Please log in or register to answer this question.

1 Answer

Answer :

Please log in or register to add a comment.

Related questions