Description : How many electron lone pairs are on the central atom in Hydrogen Sulfide?
Last Answer : ANSWER: TWO
Description : Explain why the water molecule has a bent shape and a bond angle less than 109.5° The electron repulsion between the two lone pairs of electrons on the oxygen of water causes the O–H bonds to squeeze close together
Last Answer : The electron repulsion between the two lone pairs of electrons on the oxygen of water causes the O–H bonds to squeeze close together
Description : Where are the two lone pairs of electrons of the oxygen atom in an alcohol molecule located? (a) in two p orbitals (b) in two sp orbitals (c) in two sp2 orbitals (d) in two sp3 orbitals
Last Answer : in two sp3 orbitals
Description : The number of lone pairs of electrons on xenon atom in `XeF_(4)` molecule is
Last Answer : The number of lone pairs of electrons on xenon atom in `XeF_(4)` molecule is A. 4 B. 3 C. 2 D. zero
Description : The number of lone pairs of electrons present in central atom of `CIF_3` is:
Last Answer : The number of lone pairs of electrons present in central atom of `CIF_3` is:
Description : How many lone pairs of electrons exist on the central atom in ammonia?
Last Answer : One lone pair. The central atom is N (nitrogen) which has 5valence electrons. Three of them are shared with 3 hydrogen atoms,leaving 2 electrons (1 lone pair) on the N.
Description : Acetamide is a much weaker base than ammonia. This is because (a) the electron withdrawing effect of the C=O group makes the lone pair of electrons on nitrogen atom less available for protonation. (b) ) ... NH2 group. (d) an H atom from the nitrogen is less easily lost from CH3CONH2 than from NH3.
Last Answer : the electron withdrawing effect of the C=O group makes the lone pair of electrons on nitrogen atom less available for protonation
Description : Does anyone here know what the lewis dot structure is for boron sulfide?
Last Answer : Try looking up “Lewis Dot Structure” on a search engine and see if that “rings a bell”.
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 : The number of lone pairs of electrons present on Xe in `XeF_(2)` ?
Last Answer : The number of lone pairs of electrons present on Xe in `XeF_(2)` ? A. 3 B. 4 C. 2 D. 1
Description : How many electrons are there in the valence shell of a calcium atom?
Last Answer : ANSWER: 2
Description : What differences in molecular structure might cause water to form hydrogen bonds while hydrogen sulfide does not form such bonds?
Last Answer : What is the answer ?
Description : The summation of total no. of lone pairs and `sigma` bonds in in species (A,B and C) is
Last Answer : The summation of total no. of lone pairs and `sigma` bonds in in species (A,B and C) is
Description : What shape would a molecule with two bounds groups and two lone pairs have?
Last Answer : The correct answer is: Bent.
Description : Which compound is responsible for the rotten egg smell? w) sulfuric acid x) putrescine y) hydrogen sulfide z) sulfur dioxide
Last Answer : ANSWER: Y -- HYDROGEN SULFIDE (NOTE: putrescine is a real compounz)
Description : The number of lone pairs on central atom in `XeF_2, XeF_4 and XeF_6` are:
Last Answer : The number of lone pairs on central atom in `XeF_2, XeF_4 and XeF_6` are: A. (A) 1,2,3 B. (B) 3,2,1 C. (C) 2,2,1 D. (D) 1,3,2
Description : Which of the following xenon compound has the same number of lone pairs as in `I_(3)^(-)`? (near central atom)
Last Answer : Which of the following xenon compound has the same number of lone pairs as in `I_(3)^(-)`? (near central atom) ... XeO_(3)` C. `XeF_(4)` D. `XeO_(4)`
Description : The number of lone pairs available on the central atom of sulphur tetra fluoride is
Last Answer : The number of lone pairs available on the central atom of sulphur tetra fluoride is
Description : Which of the following species contains three bond pairs and one lone pair around the central atom? (1) PCl3 (2) H2O (3) BF3 (4) NH2
Last Answer : PCl3
Description : In `OF_2`, the number of bond pairs and lone pairs of electrons are respectively,
Last Answer : In `OF_2`, the number of bond pairs and lone pairs of electrons are respectively, A. 2,6 B. 2,8 C. 2,10 D. 2,9
Description : Which of the following species is non polar with presence of polar bond and lone pair of electron on central atom.
Last Answer : Which of the following species is non polar with presence of polar bond and lone pair of electron on central atom. A. ... 4)` C. `XeF_(4)` D. `CF_(4)`
Description : Which of the following statements is correct regarding nucleophiles? (a) They have an overall positive charge (b) They have a lone-pair of electrons (c) They have an unpaired electron (d) They have empty orbitals
Last Answer : (b) They have a lone-pair of electrons
Description : Pyridine is less basic than trimethylamine because the lone-pair of electrons on N-atom in pyridine resides in (a) sp2 hybrid orbital (b) sp hybrid orbital (c) sp3 hybrid orbital (d) p-orbital
Last Answer : sp2 hybrid orbita
Description : Benzene undergoes substitution reaction more easily than addition reaction because (a) it has a cyclic structure (b) it has three double bonds (c) it has six hydrogen atoms (d) there is delocalization of electrons
Last Answer : there is delocalization of electrons
Description : Asseration: `SeCl_(4)`, does not havea tetrahedral structure. Reason: `Se` in `SeCl_(4)` has two lone pairs.
Last Answer : Asseration: `SeCl_(4)`, does not havea tetrahedral structure. Reason: `Se` in `SeCl_(4)` has two lone pairs.
Description : When an atom gains or loses a valence electron it becomes a charged particle call a?
Last Answer : Ion.
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 does energy of core electrons compare with the energy of valence electron?
Last Answer : The energy is higher.
Description : Which electron has seven valence electrons?
Last Answer : Any element in the halogen group will have seven valence electrons. These elements include fluorine, chlorine, bromine, iodine, and astatine.
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 : 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 : How do you figure out how many valence electrons an atom has based on its location on the periodic table?
Last Answer : For groups 1-2 the number of valence electrons is equal to the number of the group.For groups 13-18 the number of valence electrons is equal to the number of the group, but with numbering starting up from 3 (13), 4 (14) , etc. (transition metals excluded).
Description : Where can you find the valence electrons in an atom?
Last Answer : Valence electrons are placed in the outermost shell of electrons.
Description : Valence electrons are the electrons found on the last shell of an atom true or fase?
Last Answer : TRUE
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 : How many valence electrons does an atom of an element with an atomic number of twelve have?
Description : In the filling of electron orbitals for the elemen sulfur, which has 16 electrons, the number of electrons in the 3p orbitals is: w) 3 x) 4 y) 6 z) 0
Last Answer : ANSWER: X -- 4
Description : If the element sulfur S was to lose two electrons per atom what would the net ionic charge be?
Last Answer : The charge will be +2.
Description : Why does sulfur dioxide have 10 electrons on central atom when that is more than 8. I don't understand how it can violate the rule?
Last Answer : The octet rule is a simplification, not a hard and fast rule. We use it to help students at the start of their studies of bonding. When sulfur forms more bonds, more energy is released. resulting in a more stable situation.
Description : Elements, like calcium, located toward the top of a group have a high attraction for their valence electrons because they have a _?
Last Answer : small atomic radius.
Description : In the Lewis symbol for a fluorine atom there are paired and unpaired electrons.?
Last Answer : Yes. That is true. There are 3 pairs of electrons, and 1 loneunpaired electron.
Description : The double helical structure of DNA is held together by (a) sulfur-sulfur linkages (b) peptide bonding (c) hydrogen bonding (d) glycosidic bonds
Last Answer : hydrogen bonding
Description : How many bonds occur between the carbon and nitrogen atoms when drawing the Lewis dot structure for hydrogen cyanide?
Last Answer : Need answer
Description : How many dots should be drawn in the Lewis dot structure for a fluorine atom?
Last Answer : For fluorine: 8 dots.
Description : How many electrons are shared in the Lewis structure of CH2CI2?