What is the atomic number of Rb ?

What is the atomic number of Rb ?
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1 Answer

Answer :

The atomic number of Rb is 37
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The given figure shows a circle with centre O in which a diameter AB bisects the chord PQ at the point R. If PR = RQ = 8 cm and RB = 4 cm, then find the radius of the circle. -Maths 9th

Description : The given figure shows a circle with centre O in which a diameter AB bisects the chord PQ at the point R. If PR = RQ = 8 cm and RB = 4 cm, then find the radius of the circle. -Maths 9th

Last Answer : Let r be the radius, then OQ = OB = r and OR = (r - 4) ∴ OQ2 = OR2 + RO2 ⇒ r2 = 64 + (r-4)2 ⇒ r2 = 64 + r2 + 16 - 8r ⇒ 8r = 80 ⇒ r = 10 cm

The given figure shows a circle with centre O in which a diameter AB bisects the chord PQ at the point R. If PR = RQ = 8 cm and RB = 4 cm, then find the radius of the circle. -Maths 9th

Description : The given figure shows a circle with centre O in which a diameter AB bisects the chord PQ at the point R. If PR = RQ = 8 cm and RB = 4 cm, then find the radius of the circle. -Maths 9th

Last Answer : Let r be the radius, then OQ = OB = r and OR = (r - 4) ∴ OQ2 = OR2 + RO2 ⇒ r2 = 64 + (r-4)2 ⇒ r2 = 64 + r2 + 16 - 8r ⇒ 8r = 80 ⇒ r = 10 cm

Let R be a relation defined as a Rb if | a – b | > 0, then the relation is -Maths 9th

Description : Let R be a relation defined as a Rb if | a – b | > 0, then the relation is -Maths 9th

Last Answer : (d) Symmetric and transitive| a - a | = | 0 | = 0 so (a, a) ∉R ⇒ R is not reflexive(a, b) ∈ R ⇒ | a - b | > 0 ⇒ | b - a | > 0 ⇒ (b, a) ∈R (∵ | a - b | = | b - a |) ⇒ R is symmetric (a, b) ∈ R ... a, b, c. ∴ | a - b | > 0 and | b - c | > 0 ⇒ | a - c | > 0 ⇒ (a, c) ∈ R ⇒ R is transitive.

RB Ewwwwf?

Description : RB Ewwwwf?

Last Answer : h

Rb In which group ?

Description : Rb In which group ?

Last Answer : Rb 1 in group no.

What is the full form of RB ?

Last Answer : Rebit of RB - Reckitt Benckiser. This is a company in the United Kingdom.

In the neutron`-`induced fissioin reaction of `._(92)U^(235)` one of the products if `._(37)Rb^(95),` in this mode, another nuclide and three neutrons

Description : In the neutron`-`induced fissioin reaction of `._(92)U^(235)` one of the products if `._(37)Rb^(95),` in this mode, another nuclide and three neutrons

Last Answer : In the neutron`-`induced fissioin reaction of `._(92)U^(235)` one of the products if `._(37)Rb^(95),` in this ... `._(55)^(145)Co` D. `._(54)^(143)Xe`

Who can help me with this problem Rank the following elements by electron affinity from most positive to most negative I have the elements Ar Cl O Sb and Rb?

Description : Who can help me with this problem Rank the following elements by electron affinity from most positive to most negative I have the elements Ar Cl O Sb and Rb?

Last Answer : The order is: O, Cl, Sb, Rb, Ar.

RB 1 gene is (A) A tumour suppressor gene (B) Oncogene (C) Proto-oncogene (D) Activated proto-oncogene

Description : RB 1 gene is (A) A tumour suppressor gene (B) Oncogene (C) Proto-oncogene (D) Activated proto-oncogene

Last Answer : Answer : A

All the following statements about retino blastoma are true except (A) At least two mutations are required for its development (B) One mutation can be inherited from a parent (C) Children who have inherited one mutation develop retinoblastoma at a younger age (D) RB 1 gene promotes the development of retinoblastoma

Description : All the following statements about retino blastoma are true except (A) At least two mutations are required for its development (B) One mutation can be inherited from a parent (C) Children ... mutation develop retinoblastoma at a younger age (D) RB 1 gene promotes the development of retinoblastoma

Last Answer : Answer : D

Retinoblastoma can result from a mutation in (A) ras proto-oncogene (B) erbB proto-oncogene (C) p 53 gene (D) RB 1 gene

Description : Retinoblastoma can result from a mutation in (A) ras proto-oncogene (B) erbB proto-oncogene (C) p 53 gene (D) RB 1 gene

Last Answer : Answer : D

Following players scored triple century twice in test cricket history: A. Don Bradman (Australia), Chris Gayle (West Indies), Sehwag (India), Brian Lara (West Indies) B. Don Bradman (Australia), Tendulkar (India), Sehwag (India), Brian Lara (West Indies) C. Don Bradman (Australia), Jaysuria (SriLanka), Sehwag (India), Brian Lara (West Indies) D. Hanif Mohammad (Pakistan), RB Simpson (Australia), Hashim Amla (South Africa)

Description : Following players scored triple century twice in test cricket history: A. Don Bradman (Australia), Chris Gayle (West Indies), Sehwag (India), Brian Lara (West Indies) B. Don Bradman (Australia), ... (West Indies) D. Hanif Mohammad (Pakistan), RB Simpson (Australia), Hashim Amla (South Africa)

Last Answer : ANSWER: A

Following players scored triple century twice in test cricket history: A. Don Bradman (Australia), Chris Gayle (West Indies), Sehwag (India), Brian Lara (West Indies) B. Don Bradman (Australia), Tendulkar (India), Sehwag (India), Brian Lara (West Indies) C. Don Bradman (Australia), Jaysuria (SriLanka), Sehwag (India), Brian Lara (West Indies) D. Hanif Mohammad (Pakistan), RB Simpson (Australia), Hashim Amla (South Africa)

Description : Following players scored triple century twice in test cricket history: A. Don Bradman (Australia), Chris Gayle (West Indies), Sehwag (India), Brian Lara (West Indies) B. Don Bradman (Australia), ... (West Indies) D. Hanif Mohammad (Pakistan), RB Simpson (Australia), Hashim Amla (South Africa)

Last Answer : ANSWER: A

Following players scored triple century twice in test cricket history: A. Don Bradman (Australia), Chris Gayle (West Indies), Sehwag (India), Brian Lara (West Indies) B. Don Bradman (Australia), Tendulkar (India), Sehwag (India), Brian Lara (West Indies) C. Don Bradman (Australia), Jaysuria (SriLanka), Sehwag (India), Brian Lara (West Indies) D. Hanif Mohammad (Pakistan), RB Simpson (Australia), Hashim Amla (South Africa)

Description : Following players scored triple century twice in test cricket history: A. Don Bradman (Australia), Chris Gayle (West Indies), Sehwag (India), Brian Lara (West Indies) B. Don Bradman (Australia), ... (West Indies) D. Hanif Mohammad (Pakistan), RB Simpson (Australia), Hashim Amla (South Africa)

Last Answer : ANSWER: A

Following players scored triple century twice in test cricket history: A. Don Bradman (Australia), Chris Gayle (West Indies), Sehwag (India), Brian Lara (West Indies) B. Don Bradman (Australia), Tendulkar (India), Sehwag (India), Brian Lara (West Indies) C. Don Bradman (Australia), Jaysuria (SriLanka), Sehwag (India), Brian Lara (West Indies) D. Hanif Mohammad (Pakistan), RB Simpson (Australia), Hashim Amla (South Africa)

Description : Following players scored triple century twice in test cricket history: A. Don Bradman (Australia), Chris Gayle (West Indies), Sehwag (India), Brian Lara (West Indies) B. Don Bradman (Australia), ... (West Indies) D. Hanif Mohammad (Pakistan), RB Simpson (Australia), Hashim Amla (South Africa)

Last Answer : ANSWER: A

In the illustration, the small battery and Rb are in the circuit to apply ________. EL-0022 A. forward bias to the emitter-base B. reverse bias to the emitter-base C. a 'reference charge' on the input capacitor D. a buffer between the input ground and the emitter ground

Description : In the illustration, the small battery and Rb are in the circuit to apply ________. EL-0022 A. forward bias to the emitter-base B. reverse bias to the emitter-base C. a 'reference charge' on the input capacitor D. a buffer between the input ground and the emitter ground

Last Answer : Answer: A

Why is that on being heated in excess supply of air K,Rb and Cs forms superoxide’s instead of Oxides & peroxides?

Description : Why is that on being heated in excess supply of air K,Rb and Cs forms superoxide’s instead of Oxides & peroxides?

Last Answer : Ans.K + ,Rb+ and Cs+ are large cations and superoxide ion is larger than oxide and peroxide ions. Since due to higher lattice energies,a large cation stabilizes a large anion,therefore these metals form Superoxides.

The increasing order of reactivity among group 1 elements is Li<Na<K<Rb<Cs whereas among the group 17 elements, it is F>Cl>Br>I. Explain.

Description : The increasing order of reactivity among group 1 elements is Li

Last Answer : Ans. In group 1 elements (alkali metals) the reactivity of the metals is mainly due to the electron releasing tendency of their atoms, which is related to ionization enthalpy, Since ... electron gain enthalpy. Since both of them decrease down the group, the reactivity therefore decreases.

Among Li, Na, K, Rb, Cs, the element with lowest ionization energy is________

Description : Among Li, Na, K, Rb, Cs, the element with lowest ionization energy is________

Last Answer : Ans. Cs has lowest ionization enthalpy.

In a resistance loaded, RC coupled amplifier the dc component is blocked by A) Load resistance RL B) Coupling capacitor, CC C) RB D) The transistor.

Description : In a resistance loaded, RC coupled amplifier the dc component is blocked by A) Load resistance RL B) Coupling capacitor, CC C) RB D) The transistor.

Last Answer : B) Coupling capacitor, CC

Which one of the alkali metals, forms only, the normal oxide, M2O on heating in air (1) Na (2) Rb (3) K (4) Li

Description : Which one of the alkali metals, forms only, the normal oxide, M2O on heating in air (1) Na (2) Rb (3) K (4) Li

Last Answer : Li

Differentiate between WCB & RB

Description : Differentiate between WCB & RB 

Last Answer : Whole circle bearing (WCB)  Reduced Bearing (RB) 1. The horizontal angle made by a line with the magnetic north in the clockwise direction is the whole circle bearing of the line. 1.The horizontal angle made ... . Example: N26°E, S59°E, S65°W, N10°W etc.  6. Fig.   6. Fig.  

What is the element represented by the symbol Rb?

Description : What is the element represented by the symbol Rb?  

Last Answer : ANSWER: RUBIDIUM