Description : What is the atomic number of the element which has 3 electrons in its M shell?
Last Answer : Answer: 13.
Description : The number of electrons in the outer shell of the most stable or inert atoms is (1) 1 (2) 5 (3) 3 (4) 8
Last Answer : (4) 8 Explanation: The innermost shell has a maximum of two electrons, but the next two electron shells can each have a maximum of eight 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 of the following gas does not have an octet or eight electrons in the outer shell?
Last Answer : which of the following gas does not have an octet or eight electrons in the outer shell? A. Neon B. Radon C. Argon D. Helium
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 noble gases have low boiling points because: w) their ionization potentials are very low x) only weak Van der Waals forces hold the atoms together y) they are produced by the fractional distillation of liquid air z) they have eight electrons in the outer shell
Last Answer : ANSWER: X -- ONLY WEAK VAN DER WAALS FORCES HOLD THE ATOMS TOGETHER
Description : In a thick cylindrical shell subjected to an internal pressure (p), the radial stress across the thickness of a cylinder is a) maximum at the outer surface and minimum at the inner surface b) maximum ... and zero at the outer surface d) maximum at the outer surface and zero at the inner surface
Last Answer : c) maximum at the inner surface and zero at the outer surface
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 : 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 : Compared to Chlorine, Bromine has: w) smaller atomic size x) higher density y) lower boiling point z) greater number of outer electrons
Last Answer : ANSWER: X -- HIGHER DENSITY
Description : What is the number of electrons in the last shell of a halogen element ?
Last Answer : : The number of electrons in the last shell of halogen elements is 5 .
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 : Which element has two electrons in the K-shell only?
Last Answer : Helium
Description : 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
Last Answer : a. Unstable
Description : The rays are given off by a radioactive element from A)Nucleus B)Valence electrons C)All the orbits D)Outer orbit
Last Answer : The rays are given off by a radioactive element from A)Nucleus B)Valence electrons C)All the orbits ... electrons C. all the orbits D. outer orbit
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 : For an element , if atomic number (Z) and mass number (A) are 29 and 63 respectively . Then the number of protons , neutrons and electrons respectivel
Last Answer : For an element , if atomic number (Z) and mass number (A) are 29 and 63 respectively . Then the number of protons ... C. 29 , 34 ,29 D. 29 , 29 , 29
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 : The atomic number of an element is equal to the number of __________ present in its atom. (A) Neutrons (B) Electrons (C) Protons (D) Either (B) or (C)
Last Answer : (D) Either (B) or (C)
Description : Which one is different for the neutral atoms of the isotopes of an element? (A) Atomic weights (B) Atomic numbers (C) Number of protons (D) Number of electrons
Last Answer : (A) Atomic weights
Description : How many valence electrons does an atom of an element with an atomic number of twelve have?
Last Answer : ANSWER: TWO
Description : Which of the following is the maximum number of electrons that can be present in M-shell? (1) 2 (2) 8 (3) 18 (4) 32
Last Answer : 18
Description : How many electrons are there in the valence shell of the O2– ion? A 2 B 8 C 10 D 16 E 18
Last Answer : B 8
Description : A thick yellowish liquid that forms a crusty outer shell.
Last Answer : What is creme brulee?
Description : What is true about atoms that have a filled outer shell?
Last Answer : They're quite non-reactive. (the noble gases are elements withfilled outer shells)
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 : The main function of baffles provided in a shell and tube heat exchanger is to (A) Facilitate the cleaning of outer tube surface (B) Enhance turbulence (C) Hold the tubes in position (D) All 'a', 'b' & 'c'
Last Answer : (B) Enhance turbulence
Description : The critical radius of insulation for a spherical shell is (where, K = thermal conductivity of insulating material h0 = heat transfer coefficient at the outer surface) (A) K/h0 (B) 2K/h0 (C) h0 /K (D) h0 /2K
Last Answer : (B) 2K/h0
Description : What is the outer shell of an atom called?
Last Answer : The valence shell.
Description : The maximum number of electrons in a shell?
Last Answer : 2nA2 (n = Number of shell)
Description : The total number of electrons present in `4^"th"` shell of Astatatine (`._85At`) are:
Last Answer : The total number of electrons present in `4^"th"` shell of Astatatine (`._85At`) are:
Description : The number of electrons, present in the valence shell of carbon of carbanion bearing `-ve` charge, is:
Last Answer : The number of electrons, present in the valence shell of carbon of carbanion bearing `-ve` charge, is: A. 8 B. 7 C. 6 D. 4
Description : The number of electrons present in the valence shell of carbon of `CH_(3)overset(+)(C)H_(2)` ion bearing `+ve` charge:
Last Answer : The number of electrons present in the valence shell of carbon of `CH_(3)overset(+)(C)H_(2)` ion bearing `+ve` charge: A. 8 B. 7 C. 6 D. 4
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 : What Atoms that have the same number of outer electrons?
Last Answer : Need answer
Description : The number of electrons in the outer most orbit of carbon atom is?
Last Answer : The number of electrons in the outer most orbit of carbon atom is 4.
Description : An element having large number of __________ is most easily subjected to nuclear fission. (A) Protons (B) Electrons (C) Neutrons (D) Nucleons
Last Answer : (D) Nucleons
Description : How many electrons can be accommodated in the M shell?
Last Answer : Answer: 18.
Description : The electrons present in the outmost shell of an atom is called?
Last Answer : Valence electrons
Description : Elements with eight electrons in their outermost shell are called
Last Answer : noble gases
Description : Atoms of the same element having same atomic number and different mass number are known as?
Last Answer : Isotopes
Description : Is it possible to have an element having atomic number 1.5?
Last Answer : Atomic number is always a whole number. It can either be 1 or 2. There can be no element with atomic number 1.5
Description : How many electrons are in the valence shell of I in IF4-?
Description : How many electrons can the 3rd atom shell hold?
Description : How many electrons are needed to make stable shell?
Last Answer : A stable shell has 8 electrons.
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 : Why are electrons in the outermost shell are important?
Last Answer : Because they determine how the element will combine with otherelements
Description : Valence electrons are the electrons found on the last shell of an atom true or fase?
Last Answer : TRUE
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