Radio activity is due to – (1) unstable nucleus (2) stable nucleus (3) stable electronic configuration (4) stable electronic configuration

Radio activity is due to – (1) unstable nucleus (2) stable nucleus (3) stable electronic configuration (4) stable electronic configuration
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(1) unstable nucleus Explanation: Radioactivity is caused by unstable nuclei trying to become stable by emitting particles and or energy. The nuclei of radioactive substances are unstable due to an unstable ratio of protons to neutrons.
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Radio activity is due to (1) unstable nucleus (2) stable nucleus (3) stable electronic configu-ration (4) stable electronic configu-ration

Description : Radio activity is due to (1) unstable nucleus (2) stable nucleus (3) stable electronic configu-ration (4) stable electronic configu-ration 

Last Answer :  unstable nucleus

Radioactivity is due to a) Stable electronic configuration b) Unstable electronic configuration c) Stable nucleus d) Unstable nucleus

Description : Radioactivity is due to a) Stable electronic configuration b) Unstable electronic configuration c) Stable nucleus d) Unstable nucleus

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A disadvantage of using the configuration in the illustrated circuit is _________. EL-0045 A. no current gain B. high input resistance C. high voltage gain D. becomes unstable with an increase of ambient temperature

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Last Answer : Answer: A

What During blank an unstable isotope breaks down into a stable isotope?

Description : What During blank an unstable isotope breaks down into a stable isotope?

Last Answer : It is by radioactive decay that unstable isotopes break down into stable isotopes.

What is a way to determine age of fossil by comparing number of stable isotopes to number of unstable isotopes using half life?

Description : What is a way to determine age of fossil by comparing number of stable isotopes to number of unstable isotopes using half life?

Last Answer : Carbon decay or carbon dating

Which of the following is/are acceptable reasons for the transfusion of red blood cells based on currently available data? A. Rapid, acute blood loss with unstable vital signs but no available hematocrit or hemoglobin determination. B. Symptomatic anemia: orthostatic hypotension, severe tachycardia (greater than 120 beats per minute), evidence of myocardial ischemia, including angina. C. To increase wound healing. D. A hematocrit of 26% in an otherwise stable, asymptomatic patient.

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Last Answer : D. nuclei are unstable (Answer)

Transition state structure of the substrate formed during an enzymatic reaction is (a) transient and unstable (b) permanent and stable (c) transient but stable (d) permanent but unstable.

Description : Transition state structure of the substrate formed during an enzymatic reaction is (a) transient and unstable (b) permanent and stable (c) transient but stable (d) permanent but unstable.

Last Answer : (a) transient and unstable

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If in a rigid-jointed space frame, (6m + r) < 6j, then the frame is (A) Unstable (B) Stable and statically determinate (C) Stable and statically indeterminate (D) None of the above

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Last Answer : (A) Unstable

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Last Answer : (B) Stable and statically indeterminate

If an element has two electrons in the first shell and seven in the second shell, the element is said to be what? a. Unstable b. Unreactive c. Stable d. Inert

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Last Answer : a. Unstable

Which phase of the trajectory model of chronic illness is characterized by reactivation of the illness? a) Unstable The unstable phase is characterized by development of complications or reactivation of the illness. b) Stable The stable phase indicates that the symptoms and disability are under control or managed. c) Acute The acute phase is characterized by sudden onset of severe or unrelieved symptoms or complications that may necessitate hospitalization for their management. d) Comeback The comeback phase is the period in the trajectory marked by recovery after an acute period.

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Last Answer : a) Unstable The unstable phase is characterized by development of complications or reactivation of the illness.

09. The rise, in water level, which occurs during the transformation of the unstable shooting flow to the stable streaming flow is called hydraulic jump. A) Yes B) No

Description : 09. The rise, in water level, which occurs during the transformation of the unstable shooting flow to the stable streaming flow is called hydraulic jump. A) Yes B) No

Last Answer : A

If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in (A) Neutral equilibrium (B) Stable equilibrium (C) Unstable equilibrium (D) None of these

Description : If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in (A) Neutral equilibrium (B) Stable equilibrium (C) Unstable equilibrium (D) None of these

Last Answer : Answer: Option B

If a body floating in a liquid occupies a new position and remains at rest in this new position, when given a small angular displacement, the body is said to be in __________ equilibrium. (A) Neutral (B) Stable (C) Unstable (D) None of these

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Last Answer : Answer: Option A

The Metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select the correct statement. (A) The bodies A and B have equal stability (B) The body A is more stable than body B (C) The body B is more stable than body A (D) The bodies A and B are unstable

Description : The Metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select the correct statement. (A) The bodies A and B have equal stability (B) The body A is more stable than body B (C) The body B is more stable than body A (D) The bodies A and B are unstable

Last Answer : Answer: Option C

________ is a quantitative measure of how fair the transients die cut in the system. (a) Absolutely stable (b) Conditionally stable (c) Unstable (d) Relative stability

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If root of the characteristics equation has positive real part system is (a) Stable (b)Unstable (C) Marginally stable (d) Linear

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Last Answer : (a)Absolutely stable

G(s) = (1-s)/s(s+2) then closed loop transfer function is a) Unstable b) Stable c) Marginally stable d) All

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Last Answer : Ans: Stable

‘Fanning’ smokestack plumes are observed when A. There is an inversion above the ground surface. B. There is unstable atmosphere. C. There is neutrally stable atmosphere. D. The stack height is below an inversion layer.

Description : ‘Fanning’ smokestack plumes are observed when A. There is an inversion above the ground surface. B. There is unstable atmosphere. C. There is neutrally stable atmosphere. D. The stack height is below an inversion layer.

Last Answer : A. There is an inversion above the ground surface

Flash floods are caused when (A) the atmosphere is convectively unstable and there is considerable vertical wind shear (B) the atmosphere is stable (C) the atmosphere is convectively unstable with no vertical windshear (D) winds are catabatic

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Define stability. Sketch the root locations in the s-plane for stable and unstable system.

Description : Define stability. Sketch the root locations in the s-plane for stable and unstable system.

Last Answer : Stability: The system is said to be stable if it produces bounded output for a bounded input. It is used to define usefulness of the system. The stability implies that the system performance should not ... absence of the input, output may not return to zero it shows certain output without input. 

In nuclear fission reactions, what causes the atom’s nucleus to become unstable?

Description : In nuclear fission reactions, what causes the atom’s nucleus to become unstable?

Last Answer : the absorption of a free-moving neutron by the atom's nucleus

If the nucleus of a radium-226 atom is unstable what causes the nucleus to spontaneously decay?

Description : If the nucleus of a radium-226 atom is unstable what causes the nucleus to spontaneously decay?

Last Answer : Instability is due to a certain ratio between neutrons and protons in the atomic nucleus.

How many electrons need to be gained or lost for aluminum to achieve a stable electron configuration?

Description : How many electrons need to be gained or lost for aluminum to achieve a stable electron configuration?

Last Answer : Aluminium need five electrons.

(3) the number of electrons orbiting around the nucleus Explanation: The chemical behavior of an atom is determined by the number of electrons on its outer shell. As for the chemical bonding properties of the atom, the electron configuration determines how it will bond, with what it will bond, and in what ratio atoms will bond to form the 20,000,000 different substances on Earth.

Description : (3) the number of electrons orbiting around the nucleus Explanation: The chemical behavior of an atom is determined by the number of electrons on its outer shell. As for the chemical bonding properties of ... , and in what ratio atoms will bond to form the 20,000,000 different substances on Earth.

Last Answer : Methyl phenyl ether can be obtained by reacting - (1) phenolate ions and methyl iodide (2) methoxide ions and bromobenzene (3) methanol and phenol (4) bromobenzene and methyl bromide

Cardiac glycosides have the following configuration in the aglycone part of the steroid nucleus : (A) 5a, 1 4 a - (B)5a, 14β- (C) 5β, 1 4 a - (D) 5β,14β-

Description : Cardiac glycosides have the following configuration in the aglycone part of the steroid nucleus : (A) 5a, 1 4 a - (B)5a, 14β- (C) 5β, 1 4 a - (D) 5β,14β-

Last Answer : (D) 5β,14β-

Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit (1) X-rays (2) ultraviolet light (3) (4) All of the above (4) radio waves

Description : Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit (1) X-rays (2) ultraviolet light (3) (4) All of the above (4) radio waves

Last Answer : (4) All of the above Explanation: A light-emitting diode (LED) is a semiconductor light source that emits light when current flows through it. Infrared LEDs are used in remote-control circuits, such as those used with a wide variety of consumer electronics.

From the ground state, electronic configuration of the elements given below, pick up the one with highest value of second ionization energy:

Description : From the ground state, electronic configuration of the elements given below, pick up the one with highest value of second ionization energy:

Last Answer : From the ground state, electronic configuration of the elements given below, pick up the one with highest value of second ... D. `1s^(2)2s^(2)2p^(5)`

The noble gases have closed-shell electronic configuration and are monoatomic gases under normal conditions. The low boiling points of the lighter nob

Description : The noble gases have closed-shell electronic configuration and are monoatomic gases under normal conditions. The low boiling points of the lighter nob

Last Answer : The noble gases have closed-shell electronic configuration and are monoatomic gases under normal conditions. ... (C) unreactive D. (D) strongly basic

The noble gases have closed-shell electronic configuration and are monoatomic gases under normal conditions. The low boiling points of the lighter nob

Description : The noble gases have closed-shell electronic configuration and are monoatomic gases under normal conditions. The low boiling points of the lighter nob

Last Answer : The noble gases have closed-shell electronic configuration and are monoatomic gases under normal ... flammablity D. (D) high calorific value

For the correct assignment of electronic configuration of a complex, the valence bond theory often requires the measurement of

Description : For the correct assignment of electronic configuration of a complex, the valence bond theory often requires the measurement of

Last Answer : For the correct assignment of electronic configuration of a complex, the valence bond theory often ... activity C. magnetic moment D. dipole moment

The noble gases have closed-shell electronic configuration and are monoatomic gases under normal conditions. The low boiling points of the lighter nob

Description : The noble gases have closed-shell electronic configuration and are monoatomic gases under normal conditions. The low boiling points of the lighter nob

Last Answer : The noble gases have closed-shell electronic configuration and are monoatomic gases under normal ... reducing C. unreactive D. strongly basic

Which has the same electronic configuration as of inert gas ?

Description : Which has the same electronic configuration as of inert gas ?

Last Answer : Which has the same electronic configuration as of inert gas ? A. `Ag^(3+)` B. `Cu^(2+)` C. `Pb^(4+)` D. `Ti^(4+)`

The electronic configuration of neon is

Description : The electronic configuration of neon is

Last Answer : The electronic configuration of neon is A. `1s^(2)2s^(2)2p^(6)` B. `1s^(2)` C. `2s^(2)` D. `1s^(2)2s^(2)2p^(2)`

If the valence shell electronic configuration of an element is 3s^2 3p^1, in which block of the periodic table is it placed?

Description : If the valence shell electronic configuration of an element is 3s^2 3p^1, in which block of the periodic table is it placed?

Last Answer : If the valence shell electronic configuration of an element is 3s2 3p1, in which block of the periodic table is it placed?

If the valence shell electronic configuration is ns^2 np^5, the element will belong to :

Description : If the valence shell electronic configuration is ns^2 np^5, the element will belong to :

Last Answer : If the valence shell electronic configuration is ns2 np5, the element will belong to : a. ... halogens c. alkaline earth metals d. actinides

What is the Electronic configuration of niobium?

Description : What is the Electronic configuration of niobium?

Last Answer : 1s2, 2s2, 2p6, 3s2, 3p6, 3d10, 4s2, 4p6, 4d4, 5s1, or [Kr] 4d4,5s1.

WHAT is the electronic configuration of Nb?

Description : WHAT is the electronic configuration of Nb?

Last Answer : Nb or niobium has the electron configuration of [Kr]4d45s1

WHAT is the electronic configuration of Nb?

Description : WHAT is the electronic configuration of Nb?

Last Answer : Nb or niobium has the electron configuration of [Kr]4d45s1

What is the electronic configuration of lead?

Description : What is the electronic configuration of lead?

Last Answer : The element lead (atomic number 82) has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p2 or simplified in the noble gas form as [Xe] 4f14 5d10 6s2 6p2

What is the electronic configuration of cerium?

Description : What is the electronic configuration of cerium?

Last Answer : [Xe]4f4

What is the electronic configuration of lead?

Description : What is the electronic configuration of lead?

Last Answer : The element lead (atomic number 82) has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p2 or simplified in the noble gas form as [Xe] 4f14 5d10 6s2 6p2

What is the electronic configuration of cerium?

Description : What is the electronic configuration of cerium?

Last Answer : [Xe]4f4

The cause of periodicity of properties (a) Increasing atomic radius (b) Increasing atomic weights (c) Number of electrons in the valency orbit (d) The recurrence of similar outer electronic configuration

Description : The cause of periodicity of properties (a) Increasing atomic radius (b) Increasing atomic weights (c) Number of electrons in the valency orbit (d) The recurrence of similar outer electronic configuration

Last Answer : Ans:(d)

Atoms of different elements have - (1) same atomic number and same electronic configuration (2) different atomic number and same eletronic configuration (3) different atomic number and different number of valence electrons (4) same number of electrons and neutrons

Description : Atoms of different elements have - (1) same atomic number and same electronic configuration (2) different atomic number and same eletronic configuration (3) different atomic number and different number of valence electrons (4) same number of electrons and neutrons

Last Answer : (3) different atomic number and different number of valence electrons Explanation: Each element's atoms have a different number of protons, neutrons, and electrons, which is why they have different ... Their reactivity also varies because of the number and activeness of the electrons in the atom.

The electronic configuration of an atom having atomic number `20' is – (1) 2, 8, 10 (2) 2, 6, 8, 4 (3) 2, 8, 8, 2 (4) 2, 10, 8

Description : The electronic configuration of an atom having atomic number `20' is – (1) 2, 8, 10 (2) 2, 6, 8, 4 (3) 2, 8, 8, 2 (4) 2, 10, 8

Last Answer : (3) 2, 8, 8, 2 Explanation: Electrons occupy shells around the outside of an atom. There can be up to two electrons in the first shell, up to eight in the second and up to eight in the third. A calcium atom (Ca) has electron structure 2,8,8,2.

Electronic configuration of Element Atomic number 20 is –

Description : Electronic configuration of Element Atomic number 20 is –

Last Answer : 2, 8, 8, 2