Description : How many valence electrons are in the element fluorine and do the same for chlorine and bromine?
Last Answer : The number of valence electrons is seven.
Description : Difference between Valency and Valence electrons ? -Chemistry
Last Answer : 1 ) Valency : The ability to gain, loose and sharing of electrons is valency / combinig capacity atoms of other elements is valency. 2 ) Valence elctrons : Electrons present in the outermost shell of the atom is valence electrons.
Description : What is the valence of titanium ?
Last Answer : Titanium valence 3 and 4 .
Description : What is the valence of calcium ?
Last Answer : Calcium valence 2 .
Description : What is the valence of potassium ?
Last Answer : Potassium valence 1 .
Description : What is the valence of phosphorus ?
Last Answer : Phosphorus exhibits multiple combinations , as it exhibits 3 odd electrons in the normal state and 5 odd electrons in the excited state.
Description : What is the valence of aluminum ?
Last Answer : Aluminum valence 3 .
Description : What is the valence of magnesium ?
Last Answer : Magnesium valence 2 .
Description : What is the valence of helium ?
Last Answer : Helium has zero viscosity.
Description : What is the valence electron of fluorine ?
Last Answer : The valence of fluorine is seven.
Description : What is the valence electron of phosphorus ?
Last Answer : Phosphorus valence electron 5 .
Description : (2) experience collision less frequently Explanation: When an electric field is applied, both the valence electrons and the free electrons move in the same direction. The hole direction is opposite to that ... to free electrons. This means mobility is also less for a hole compared to free electron.
Last Answer : Carbon dioxide is called a greenhouse gas because - (1) its concentration remains always higher than other gases (2) it is used in photosynthesis (3) it absorbs infrared radiation (4) it emits visible radiation
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 : Electrons in the highest energy level of an atom are called _______. (1) valence protons (2) orbital protons (3) valence electrons (4) orbital electrons
Last Answer : (3) valence electrons Explanation: The outermost orbital shell of an atom is called its valence shell, and the electrons in the valence shell are valence electrons.
Description : Indicate three differences between valence and oxidation number?
Last Answer : Ans (i) Valency of an element cannot not be zero but oxidation number can be. (ii) Valency is just a number but oxidation number can be negative or positive. (iii) Valency is the combining capacity whereas oxidation number refers to charge which an atom carry when present in the combined state.
Description : Explain the formation of H2 molecule on the basis of valence bond theory.
Last Answer : Ans. When two H atoms come closer the following forces operate between them: a. Attractive : i.nucleus of atom and its electron ii.nucleus of one atom and electron of other. b.repulsive ... and the system acquires minimum energy .At this stage two hydrogen atoms are said to be bonded together.
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 one of the following elements has valence electrons in the n = 3 shell? A beryllium B oxygen C silicon D neon E hydrogen
Last Answer : C silicon
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 : Oxygen has a valence number of -1 in: w) Sodium Peroxide x) Potassium Chlorate y) Water z) Sodium Hydroxide
Last Answer : ANSWER: W -- SODIUM PEROXIDE
Description : How many electrons are there in the valence shell of a calcium atom?
Last Answer : ANSWER: 2
Description : How many valence electrons does an atom of an element with an atomic number of twelve have?
Last Answer : ANSWER: TWO
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 : What's a valence electron?
Last Answer : www.wikipedia.com/Valence_electron
Description : which of the following accurately describes properties of valence? -General Knowledge
Last Answer : The smaller the number of electrons an atom has to borrow or to lend, the greater the activity of the atom. -accurately describes properties of valence.
Description : What is the valence electron of nitrogen ?
Last Answer : Nitrogen valence is 5 electrons .
Description : Total no. of vacant orbitals in valence shell of sulphur when it undergoes formation of `SF_(4)` :-
Last Answer : Total no. of vacant orbitals in valence shell of sulphur when it undergoes formation of `SF_(4)` :- A. 5 B. 4 C. 3 D. 2
Description : Five valence electrons of `.^(15)P` re labelled as If the spin quantum numbers of B and Z is `+(1)/(2)`, the group of electron with three of the quant
Last Answer : Five valence electrons of `.^(15)P` re labelled as If the spin quantum numbers of B and Z is `+(1)/(2)`, ... A. AB,XYZ,BY B. AB C. XYZ,AZ D. AB,XYZ
Description : How many of the following properties of halogen Increases with increase In atomic number. (a) Number of valence electron (b) Metallic nature (c) Boili
Last Answer : How many of the following properties of halogen Increases with increase In atomic number. (a) Number of ... . (j) `Delta_"eg"H` (magnitude wise)
Description : Find the valence factor for following salts : (i) `K_(2)SO_(4).Al_(2)(SO_(4))_(3).24H_(2)O " " (ii) CaCO_(3)`
Last Answer : Find the valence factor for following salts : (i) `K_(2)SO_(4).Al_(2)(SO_(4))_(3).24H_(2)O " " (ii) CaCO_(3)`
Description : s-1: `[MnCl_(6)]^(3),[FeF_(6)]^(3-)` and `[CoF_(6)]^(-3)` are paramagnetic having four, five and four unpaired electrons respectively. S-2: Valence bo
Last Answer : s-1: `[MnCl_(6)]^(3),[FeF_(6)]^(3-)` and `[CoF_(6)]^(-3)` are paramagnetic having four, five and ... onn the metal ion. A. TTT B. TFT C. FTF D. TFF
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 : 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 : 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 : 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 : The valence shell configuration of noble gases (except He) is
Last Answer : The valence shell configuration of noble gases (except He) is A. `ns^(2)np^(4)` B. `ns^(2)np^(1)` C. `ns^(2)np^(6)` D. `ns^(2)np^(6)nd^(10)`
Description : Valence configuration of VI group elements is
Last Answer : Valence configuration of VI group elements is A. `ns^(2)np^(2)` B. `ns^(2)np^(4)` C. `ns^(2)np^(5)` D. `ns^(2)np^(6)`
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 : What are the valence electrons? For s-block and p-block elements show that number of valence electrons is equal to its group number.
Last Answer : What are the valence electrons? For s-block and p-block elements show that number of valence electrons is equal to its group number.
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 total valence electrons in NH4?
Last Answer : Need answer
Description : What is the valence level of an atom?
Description : What is the valence number of a potassium?
Description : What elements have a full valence?
Description : How many valence electrons are in each energy level?
Description : How many valence electrons does magnesium (Mg) have?
Description : What elements have 2 valence electron?
Last Answer : Zinc and Calcium
Description : How many electrons are in the valence shell of I in IF4-?
Description : How many shells and valence electrons does krypton have?