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 : 2, 8, 8, 2
Description : The electronic configuration of an atom having atomic number '20' is?
Description : Write the electronic configuration of scandium having atomic number 21.
Last Answer : Ans-Sc = [Ar]3d1 4S2
Description : Electronic configuration of Element Atomic number 20 is –
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.
Description : Atoms of different elements have (1) same atomic number and same electronic configuration (2) different atomic number and same eletronic configu-ration (3) different atomic number and different number of valence electrons (4) same number of electrons and neutrons
Last Answer : different atomic number and different number of valence electrons
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)
Description : Isotopes of an element have the same (A) Number of neutrons (B) Mass number (C) Electronic configuration (D) Atomic weight
Last Answer : (C) Electronic configuration
Description : Write the excited state electronic configuration of carbon atom.
Last Answer : 1s , 2s 2px 2py 2pz
Description : Write the electronic configuration of carbon atom when it is in ground state.
Last Answer : The electronic configuration of carbon atom in ground state is 1s 2 , 2s 2 , 2p 2
Description : How is the electronic configuration of an atom related to the period in the periodic table?
Last Answer : Periods are formed according to the way in which electrons get filled up in different shells and orbitals. For example first period of the table is completed when the first shell of the atom is completely filled up
Description : How does the electronic configuration of an atom relate to its position in the modern periodic table?
Last Answer : The group number of elements having up to two valence electrons is equal to the number of valence electrons. For example: Group 1 elements have 1 valence electron. Group 2 elements have 2 valence electrons. Group 13 elements have 3 valence electrons.
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 : Which group of elements have an outer electronic configuration of S-2-P-6?
Last Answer : ANSWER: NOBLE GASES
Description : What is the ground-state configuration for Na+? The atomic atomic number for sodium is eleven.
Last Answer : ANSWER: 1S22S22p6
Description : The electronic configuration of three elements X, Y and Z are X-2,8; Y-2,8,7 and Z-2,8,2‘Which of the given is correct. a) X is a metal b) Y is a metal c) Zis a non-metal d) Y is a non-metal and Z is a metal
Last Answer : d) Y is a non-metal and Z is a metal
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
Description : What is the electron configuration of an atom ?
Last Answer : The number of electrons in an atom is a unique number. The structure of which gives an idea of the properties of atoms. According to the laws of quantum mechanics, a certain number of electrons in an angle ... are as follows: (a) Pauli's Exclusion Principle ( b) Aufbau Principle ( c) Hund's Rule
Description : Isotopes of an element have different (A) Mass number (B) Electronic configuration (C) Nuclear charge (D) Chemical properties
Last Answer : (A) Mass number
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)`
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
Last Answer : The noble gases have closed-shell electronic configuration and are monoatomic gases under normal ... flammablity D. (D) high calorific value
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
Description : Radioactivity is due to a) Stable electronic configuration b) Unstable electronic configuration c) Stable nucleus d) Unstable nucleus
Last Answer : Radioactivity is due to a) Stable electronic configuration b) Unstable electronic configuration c) ... C. stable nucleus D. unstable nucleus
Last Answer : The noble gases have closed-shell electronic configuration and are monoatomic gases under normal ... reducing C. unreactive D. strongly basic
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+)`
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)`
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?
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
Description : What is the Electronic configuration of niobium?
Last Answer : 1s2, 2s2, 2p6, 3s2, 3p6, 3d10, 4s2, 4p6, 4d4, 5s1, or [Kr] 4d4,5s1.
Description : WHAT is the electronic configuration of Nb?
Last Answer : Nb or niobium has the electron configuration of [Kr]4d45s1
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
Description : What is the electronic configuration of cerium?
Last Answer : [Xe]4f4
Description : Radio activity is due to – (1) unstable nucleus (2) stable nucleus (3) stable electronic configuration (4) stable electronic configuration
Last Answer : (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.
Description : The electronic configuration of carbon is
Last Answer : 1s , 2s 2p
Description : The electronic configuration of silicon is
Last Answer : 1s , 2s 2p , 3s 3p .
Description : 2. Write the electronic configuration of silicon
Last Answer : The atomic number of silicon is 14 and its mass number is 28. Its electronic configuration 2 2 6 2 2
Description : How elements are classified based on electronic configuration?
Last Answer : Based on electronic configuration, all elements are grouped into four categories. They are ‘s block’, ‘p block’, ‘d block’ and ‘f block’ elements.
Description : Name this chemical element. The principal use of this element has been in solid-state electronic devices, notably transistors. Its position in the periodic table is in group "4A". The element's atomic number is 32 and its chemical symbol is Ge.
Last Answer : ANSWER: GERMANIUM
Description : What happens to an atom of fluorine (F) when it forms an ionic bond in which it has the same electron configuration as the noble gas neon?
Last Answer : It accepts one electron.
Description : Two sugars which differ from one another only in configuration around a single carbon atom are termed (A) Epimers (B) Anomers (C) Optical isomers (D) Stereoisomers
Last Answer : A
Last Answer : (A) Epimers
Description : An atom of an element with mass number 23 and atomic number 11 will have- (1) 11 neutrons, 12 protons and 11 electrons (2) 11 protons, 12 neutrons and 11 electrons (3) 11 protons, 12 electrons and 11 neutrons (4) 23 protons and 11 electrons
Last Answer : (2) 11 protons, 12 neutrons and 11 electrons
Description : Atomic number of an atom gives the number of which of the following? (1) electrons (2) protons (3) neutrons (4) neutrons and protons
Last Answer : (2) protons Explanation: Atomic number of a chemical element is the number of protons found in the nucleus of an atom of that element, and therefore identical to the charge number of the nucleus. ... periodic table. In an uncharged atom, the atomic number is also equal to the number of electrons.
Last Answer : (2) protons Explanation: The atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of an atom.
Description : An atom of an element has atomic number 17 and mass number 36. The number of neutrons in its nucleus is– (1) 17 (2) 19 (3) 36 (4) 53
Last Answer : (2) 19 Explanation: Mass Number = number of protons (atomic number) + nu.sriber of neutrons. So as per the question, 36= number of neutrons + 17. Number of neutrons= 36 -17= 19