The distance between the centre of the nucleus and the outermost electron shell of an

atom is called

1 Answer

Answer :

atomic size

Related questions

Description : The energy required to remove the electron from the outermost shell from a free and isolated atom of the element is called

Last Answer : Ionisation energy.

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

Description : Emission of β-particles during radioactive decay of a substance is from (A) Innermost shell (B) Nucleus (C) Outermost shell (D) None of these

Last Answer : (B) Nucleus

Description : Which one of the following statements concerning elements in the Periodic Table is correct? A Elements of the same group all have the same number of electrons in the outermost occupied electron shell. B ... (Group 17) are all gases at room temperature. E The Group 13 elements are all metals.

Last Answer : D) Are compounds that exhibit both metallic & non-metallic properties to some extent and are exemplified by elements like germanium, silicon & boron

Description : The emission of beta particle is from A)The valence shell of an atom B)The inner shell of an atom C)The nucleus due to the nuclear conversion `:` Prot

Last Answer : The emission of beta particle is from A)The valence shell of an atom B)The inner shell of ... to the nuclear conversion neutron `to` proton + electron

Description : Elements with eight electrons in their outermost shell are called

Last Answer : noble gases

Description : What do we call the outer electron shell of an atom?

Last Answer : The outer electron shell of an atom is the valence shell.

Description : In general the number of electrons in the outermost shell of the metal is A)1B)1 to 3 C)5 to 8 D)8

Last Answer : B)1 to 3

Description : Why are electrons in the outermost shell are important?

Last Answer : Because they determine how the element will combine with otherelements

Description : Why cesium requires little energy to release its one elecron of outermost shell?

Last Answer : The distance between the nucleus an this electron is higher.

Description : What are transition elements? (1) Elements whose two outermost shells are incomplete (2) Elements which possess properties of both, metals and non-metals (3) They have eight electrons in the outermost shell (4) Elements whose three outermost shells are incomplete

Last Answer : (1) Elements whose two outermost shells are incomplete

Description : The nucleus of a hydrogen atom consists of (a) One proton (b) One proton + two neutrons (c) One neutron only (d) One electron only

Last Answer : Ans:(a)

Description : What happens when an electron moves nearer to the nucleus of the atom?

Last Answer : Its energy decreases

Description : In a hydrogen atom, the electron makes about `0.6xx10^(16)` revolutions per second around the nucleus. Determine the average current at any point on t

Last Answer : In a hydrogen atom, the electron makes about `0.6xx10^(16)` revolutions per second around the nucleus. ... at any point on the orbit of the electron.

Description : In hydrogen atom, the electron is making `6.6xx10^(15) rev//sec` around the nucleus in an orbit of radius `0.528 A`. The magnetic moment `(A-m^(2)) wi

Last Answer : In hydrogen atom, the electron is making `6.6xx10^(15) rev//sec` around the nucleus in an orbit of radius `0. ... ` C. `1xx10^(-23)` D. `1xx10^(-27)`

Description : What is the Particle in a nucleus of an atom it has a positive electrical charge and it's 2000 times the mass of the electron?

Last Answer : protonthere is no such thing as an electrical charged nut there issuch a thing as a charged particle, that is also known asneutron

Description : The fundamental particles present in the nucleus of an atom are - (1) Electron, proton (2) Proton, neutron (3) Neutron, electron (4) Neutron, positron

Last Answer : (2) Proton, neutron Explanation: The nucleus is the very dense region consisting of protons and neutrons at the center of an atom. It was discovered in 1911, as a result of Ernest Rutherford's ... mass of an atom is located in the nucleus, with a very small contribution from the orbiting electrons.

Description : Nucleus of an atom consists of. (1) Proton (2) Neutron (3) Proton and Neutron (4) Electron, Proton and Neutron

Last Answer : (3) Proton and Neutron Explanation: The nucleus is the very dense region consisting of protons and neutrons at the center of an atom. It was discovered in 1911, as a result of Ernest Rutherford' ... of an atom is located in the nucleus, with a very small contribution from the orbiting electrons.

Description : Pick out the wrong statement. (A) The nucleus of a hydrogen atom is identical with a proton (B) A, β-ray particle is identical with an electron (C) Mass of an electron is about 1/1800th of the lightest nucleus (D) Positron is heavier than a proton

Last Answer : (D) Positron is heavier than a proton

Description : Electron can exist in the atom but outside the nucleus because a) speed of electron is equal to the speed of light b) speed of electron is more than speed of light c) speed of electron is less than speed of light d) None of these

Last Answer : c) speed of electron is less than speed of light

Description : In Rutherford's experiment involving the deflection of alpha particles by atomic nuclei, the fact that some of the alpha particles bombarding the thin gold foil were back-scattered, led to one of the ... its nucleus z) the nucleus of a gold atom occupies nearly the entire space of the atom

Last Answer : ANSWER: Y -- MOST OF THE MASS OF A GOLD ATOM IS IN ITS NUCLEUS

Description : The fundamental particles present in the nucleus of an atom are (1) Electron, proton (2) Proton, neutron (3) Neutron, electron (4) Neutron, positron

Last Answer : Proton, neutron

Description : Nucleus of an atom consists of. (1) Proton (2) Neutron (3) Proton and Neutron (4) Electron, Proton and Neutron

Last Answer :  Proton and Neutron

Description : The outermost orbit of an atom is called?

Last Answer : Valence shell.

Description : The electrons in the outermost orbit of atom are: a) Valance electrons b) Static electrons c) Tightly bound d) Stationary

Last Answer : a) Valance electrons

Description : What is the approximate distance between an electron and the nucleus?

Last Answer : The Bohr radius, is the estimated distance between protons in the nucleus and electrons - but electrons aren't solid, stationary particles... The simple answer would be about one-twentieth of a nanometre. But this would only be reasonable if the electron were a solid particle.

Description : The orbital angular momemtum quantum number indicates which one of the following? w) the average distance of the electrons from the nucleus x) the direction of spin of the electron y) the shape of the orbital z) the position about the three axes in space of the orbital 

Last Answer : ANSWER: Y -- THE SHAPE OF THE ORBITAL

Description : Name the female physicist who received the Nobel Prize in 1963 for her discovery concerning the shell structure of the nucleus.  

Last Answer : ANSWER: (MARIA GOEPPERT) MAYER

Description : Electrons which are free to move around are also called A. conduction electrons B. valence shell electrons C. inner electrons D. electron sea

Last Answer : conduction electrons

Description : The electrons present in the outmost shell of an atom is called?

Last Answer : Valence electrons

Description : What is the outer shell of an atom called?

Last Answer : The valence shell.

Description : What is the radius of an imaginary shell around an atom which determines how close two nonbonded atoms may approach each other called?

Last Answer : ANSWER: VAN DER WAALS RADIUS 

Description : An electron is present in 4 f sub - shell . The possible values of azimuthal quantum number for this electron are :-

Last Answer : An electron is present in 4 f sub - shell . The possible values of azimuthal quantum number for this electron are :- A. ... 3 B. 1 ,2, 3, 4 C. 3 D. 4

Description : Assertion `(A) : K-` shell electron capture is detected by analyzing the wavelength of `X-` ray emitted. Reason `(R):` The wavelength of the `X-` ray

Last Answer : Assertion `(A) : K-` shell electron capture is detected by analyzing the wavelength of `X-` ray emitted. ... D. If both (A) and (R ) are incorrect.

Description : The mass of an electron in motion depends upon - (1) Direction of motion (2) B its velocity (3) C its velocity of e- (4) D it’s shell number

Last Answer : (2) B its velocity Explanation: The electron has a mass that is approximately 1/1836 that of the proton. Quantum mechanical properties of the electron include an intrinsic angular momentum (spin) of a half-integer value, expressed in units of the reduced Planck constant, ħ.

Description : From the elements: Cl, Br, F, O, Al, C, Li, Cs and Xe; choose the following: (a) The element with highest negative electron gain enthalpy. (b) The element with lowest ionization enthalpy. ( ... . (f)The element which belongs to zero group. (g) The elements which forms largest number of compounds.

Last Answer : Ans. (a). The element chlorine (Cl) has the highest negative electron gain enthalpy. (b). The element cesium (Cs) has lowest ionization enthalpy. (c). The element fluorine F has lowest atomic radius. (d ... zero group (or group 18). (g). The element carbon (C) forms the largest number of compounds.

Description : What term is used to describe the definite discrete amounts of energy required to move an electron from a low shell to a higher shell?

Last Answer : Quanta.

Description : A characteristic of the noble gases is that they all: w) have eight electrons in the outer shell x) have low stability y) form many compounds z) have filled outer electron shells

Last Answer : ANSWER: Z -- HAVE FILLED OUTER ELECTRON SHELLS

Description : The block of elements in the periodic table which are filling the 4-f electron shell are known as:

Last Answer : ANSWER: LANTHANIDES

Description : Draw the atomic structure of (i) an atom with same number of sub-atomic particles, (ii) an atom with same number of electrons in L and M shell. -Chemistry 9th

Last Answer : (i) Oxygen Number of electrons = 8 Number of protons= 8 Number of neutron= 8 (ii) Argon Atomic number =18=2,8,8 No of electrons in L shell = 8 No of electrons in M shell = 8

Description : How many electrons can the 3rd atom shell hold?

Last Answer : Need answer

Description : How does an atom gets a full shell of electrons?

Last Answer : The nonmetals usually gain or share however many electrons theyneed to complete their outer shell. Metals tend to lose theelectrons in their outer shell, so that one of the inner shellsessentially becomes the outer shell.

Description : Valence electrons are the electrons found on the last shell of an atom true or fase?

Last Answer : TRUE

Description : How many electrons are there in the valence shell of a calcium atom?

Last Answer : ANSWER: 2

Description : The region of space around the nucleus where there is a high probability of finding an electron is called?

Last Answer : Orbital

Description : The protons and neutrons are found in the center of the atom, which is called the -----of the atom? A. Nucleus (Answer) B. Headquarters C. Hub D. None of These

Last Answer : A. Nucleus (Answer)

Description : What is the extremely large amount of energy associated with the strong bonds within the nucleus of the atom itself called?  A. Chemical energy  B. Latent energy  C. Phase energy  D. Nuclear energy

Last Answer : Nuclear energy

Description : Answer: They are regions of space around the nucleus where the probability of finding an electron is maximum.

Last Answer : Which cells are programmed to die during embryonic stage?

Description : Assertion : In a radioactive disintegration, an electron is emitted by the nucleus. Reason : Electrons are always present inside the nucleus.

Last Answer : Assertion : In a radioactive disintegration, an electron is emitted by the nucleus. Reason : Electrons are ... both (A) and (R ) are incorrect.

Description : A single electron orbits around a stationary nucleus of charge `+Ze`, where Z is a constant and e is the electronic charge. It requires `47.2 eV` to e

Last Answer : A single electron orbits around a stationary nucleus of charge `+Ze`, where Z is a constant ... the electron from the first Bohr orbit to infinity.