Description : a. Which atom should have smaller ionization enthalpy, oxygen or sulfur? b. The lithium forms +1 ions while berylium forms +2 ions ?
Last Answer : With the help of diagram answer the questions given below : a. Which atom should have smaller ... forms +1 ions while berylium forms +2 ions ?
Description : What is the half-life of the Rubidium-87 / Strontium-87 decay chain?
Last Answer : http://answers.yahoo.com/question/index?qid=20091020104308AAsZVxB Rb 87 half life = 5*10^11 years Sr 87 half life = 2.83 hours
Description : What is the symbol of Rubidium ?
Last Answer : Symbol of Rb rubidium.
Description : What are the chemical signals of Rubidium ?
Last Answer : Rb Rubidium tax signal
Description : Which of the following elements is not an alkaline earth metal? w) beryllium x) barium y) calcium z) rubidium
Last Answer : ANSWER: Z -- RUBIDIUM
Description : Which of the following alkali metals has highest specific heat? (1) Caesium (2) Rubidium (3) Potassium (4) Lithium
Last Answer : Lithium
Description : Why second ionization energy of alkali metals are higher than first ionization energy?
Last Answer : The attraction between the electrons involved and the atomic nucleus is stronger.
Description : Second ionization energy: A. is always less than first ionization energy B. is always greater than first ionization energy (Answer) C. is equal to the first ionization energy D. may be greater or less than the first ionization energy depending on the nature of the element
Last Answer : B. is always greater than first ionization energy (Answer)
Description : What is ionization energy ?
Last Answer : The amount of energy required to move the most loosely connected electrons from an isolated atom of an element to an infinite distance in a gaseous state is called the ionization energy of that element.
Description : Why is the ionization energy of IA class elements lowest at any stage ?
Last Answer : Any phase of the Periodic Table starts with Group- IA on the left . At any stage, from left to right, the value of ionization potential gradually increases due to atomic size contraction. For this reason, the ionization energy of the elements of the leftmost IA group is the lowest.
Description : What is the ionization energy of an element ?
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 ionisation energy of `H` is `13.6 eV`. Calculate the ionization energy of `Li^(2+)` ions.
Last Answer : The ionisation energy of `H` is `13.6 eV`. Calculate the ionization energy of `Li^(2+)` ions. A. 13.6 eV B. 27.2 eV C. 40 .8 eV D. 122 .4 eV
Description : `alpha`-rays have ionization power because they possess a. Lesser kinetic energy b. Higher kinetic energy c. Lesser penetration power d. Higher penetr
Last Answer : `alpha`-rays have ionization power because they possess a. Lesser kinetic energy b. Higher ... . lesser penetration power D. higher penetration power
Description : The elements which occupy the peaks of ionization energy curve are
Last Answer : The elements which occupy the peaks of ionization energy curve are A. Na,K,Rb,Cs B. Na,Mg,Cl,I C. Cl,Br,I,F D. He,Ne,Ar,Kr
Description : The noble gas with highest ionization energy is
Last Answer : The noble gas with highest ionization energy is A. He B. Ar C. Xe D. Kr
Description : What has the smallest first ionization energy Carbonsiliconaluminumboron out of these elements?
Last Answer : K :Apex
Description : Who has the smallest ionization energy?
Last Answer : Need answer
Description : How IS The electronegativity trend relates to the first ionization energy trend?
Last Answer : Electronegativity and first ionization energy both increasegoing up the Periodic Table.
Description : What trend does the ionization energy follow in the periodic table?
Last Answer : It decreases when going down a group.
Description : Why alkali metal have low ionization energy?
Last Answer : Ionization energy is the energy required to remove an electronfrom an atom or ion. Low ionization energy indicates that it takesless energy to remove an electron from the atom. The alkali ... are more and more electrons in theoutermost energy level, requiring more energy to remove anelectron.
Description : What are the trends of First ionization energy of group 2?
Last Answer : What is the answer ?
Description : What electron would have the highest ionization energy for an oxygen atom?
Description : What is a general trend in ionization energy across a period?
Description : What Ionization energy is the amount of energy necessary to .?
Last Answer : Ionization energy and electron affinity for cations and anions,respectively.
Description : What trends does the first ionization energy follow going across the periodic table?
Last Answer : The correct answer is: The ionization energy increases becausethere are more protons to pull on the electrons.
Description : What element have the largest first ionization energy?
Last Answer : Cl -apex.
Description : atoms with low ionization energy give up their outer valence electrons with ease?
Last Answer : trueapex
Description : The energy released when an extra electron is added to a neutral gaseous atom is called (a) Bond energy (b) Electron affinity (c) Ionization potential (d) Electronegativity
Last Answer : Ans:(b)
Description : The alkali metals have (a) Low ionization energy (b) High electronegativities (c) High m.p. (d) Electron configuration of ns2np1
Last Answer : Ans:(a)
Description : The element with highest first ionization energy is - (1) hydrogen (2) helium (3) lithium (4) sodium
Last Answer : (2) helium Explanation: The first ionisation energy is the energy required to remove the most loosely held electron from one mole of gaseous atoms to produce 1 mole of gaseous ions each with a charge of ... ) of Hydrogen: around 1200: Helium: about 2500; Lithium: about 500; and Sodium: about 500.
Description : Which among the following is not a characteristic of transition metals? (1) Tendency to gain electrons (2) Low electronegativity (3) Low ionization energy (4) Malleability
Last Answer : (1) Tendency to gain electrons Explanation: The transition metals have a tendency to lose electrons. Since the electrons in the highest energy level are actually on a lower principal enemy number than the ... ions, the 4s electrons are always lost first; so, they form only cations (positive ions).
Description : Name the process of production of energy in the Sun – (1) Nuclear fission (2) Radioactivity (3) Nuclear fusion (4) Ionization
Last Answer : (3) Nuclear fusion Explanation: The source of the sun's fuel is hydrogen and helium gases. Through a special chemical reaction, called nuclear fusion, the hydrogen gas is "burned" releasing an enormous amount of energy in the form of light and heat.
Description : Which among the following is not a characteristic of transition metals? (1) Tendency to gain electrons (2) Low electro negativity (3) Low ionization energy (4) Malleability
Last Answer : (1) Tendency to gain electrons Explanation: The transition metals have a tendency to lose electrons. Since the electrons in the highest energy level are actually on a lower principal energy number than the ... makes it relatively easy to lose some or all of their electrons to land in stable state.
Description : Among Li, Na, K, Rb, Cs, the element with lowest ionization energy is________
Last Answer : Ans. Cs has lowest ionization enthalpy.
Description : Define the following : Atomic Radii , Ionization Energy , Electron Affinity , Electronegativity.
Last Answer : Ans :(1) Atomic Radii : An atom does not have strictly defined boundaries so it is impossible to determine the exact radius of an atom but theoretically it is defined as half the distance between the ... in Period : It increases from left to right in a period due to increase in nuclear charge.
Description : It is the deposition of radiant energy as heat into an absorbing body. a. Radiation b. Ionization c. Convection d. Insolation
Last Answer : Insolation
Description : The energy required to completely remove an electron from the first Bohr orbit is called a) excited energy b) ionization energy c) accelerated energy d) orbital energy
Last Answer : b) ionization energy
Description : In general, as you move down a family the ionization energy: w) increases x) decreases y) remains the same z) increases or decreases
Last Answer : ANSWER: X -- DECREASES
Description : Within a given period of the periodic table, the element with the lowest ionization energy is: w) transition metal x) alkali metal y) halogen z) noble gas
Last Answer : ANSWER: X -- ALKALI METAL
Description : Which of the following elements has the highest first ionization energy? w) Helium x) Neon y) Fluorine z) Argon
Last Answer : ANSWER: W -- HELIUM
Description : If the first ionization energy of magnesium is 176 kilocalories per mole, one would expect the second ionization energy t be approximately: w) 350 kilocalories per mole x) 1,760 kilocalories per mole y) 200 kilocalories per mole z) 20 kilocalories per mole
Last Answer : ANSWER: W -- 350 KILOCALORIES PER MOLE
Description : Which of the following would have the largest THIR ionization energy? Is it: w) Boron x) Carbon y) Nitrogen z) Magnesium
Last Answer : ANSWER: Z -- MAGNESIUM
Description : As one goes across a period in the periodic table, the ionization energy generally increases for one of the following reasons. Is it because of the increasing w) atomic radius x) melting point y) nuclear charge z) density
Last Answer : ANSWER: Y -- NUCLEAR CHARGE
Last Answer : Tendency to gain electrons
Description : Name the process of production of energy in the Sun (1) Nuclear fission (2) Radioactivity (3) Nuclear fusion (4) Ionization
Last Answer : Nuclear fusion
Description : Why the second ionization enthalpy is greater than the first ionization enthalpy ?
Last Answer : Why the second ionization enthalpy is greater than the first ionization enthalpy ?
Description : Give IUPAC name of the ionization isomer of [Ni(NH3)3NO3]Cl. -Chemistry
Last Answer : IUPAC name : Triammine chlorido nickel (II) nitrate [Ni(NH3)3NO3]Cl
Description : Give IUPAC name of ionization isomer of [Ni(NH3)3NO3]Cl. -Chemistry
Last Answer : IUPAC name : Triammine nitrato nickel (III) chloride