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Question
What symbol is used to represent the factor 10-9?
A) M
B) m
C) 
D) n
Answer
This answer is hidden. It contains 1 characters.
Related questions
Q:
The formula for dinitrogen trioxide is
A) N(OH)3.
B) (NO3)2.
C) N2O3.
D) N3O2.
Q:
The electronegativity for both sulfur and carbon is 2.5. Therefore the compound CS2 would be expected to
A) be ionic with C as the anion.
B) be ionic with C as the cation.
C) have nonpolar covalent bonds between C and S.
D) have polar covalent bonds between C and S.
Q:
The greater the electronegativity difference between two bonded atoms, the
A) greater the bond order.
B) greater the covalent character of the bond.
C) greater the ionic character of the bond.
D) more unstable the bond.
Q:
A reactive element with a relatively high electronegativity would be expected to have a relatively
A) small negative electron affinity and a relatively low ionization energy.
B) small negative electron affinity and a relatively high ionization energy.
C) large negative electron affinity and a relatively low ionization energy.
D) large negative electron affinity and a relatively high ionization energy.
Q:
Covalent bonding is a
A) gain of electrons.
B) loss of electrons.
C) transfer of electrons.
D) sharing of electrons.
Q:
Which of these elements has the most favorable (most negative) electron affinity?
A) Ca
B) N
C) Ne
D) S
Q:
Which liberates the most energy?A) Br(g) + e- -> Br-(g)B) Cl(g) + e- -> Cl-(g)C) F(g) + e- -> F-(g)D) I(g) -> I-(g)
Q:
Which period 3 element has successive first through seventh ionization energies (kJ/mol) : Ei1 = 578; Ei2 = 1,817; Ei3 = 2,745; Ei4 = 11,575; Ei5 = 14,830; Ei6 = 18,376; and Ei7 = 23,293?
A) Mg
B) Al
C) S
D) Cl
Q:
Which ionization process requires the most energy?A) S(g) -> S+(g) + e-B) S+(g) -> S2+(g) + e-C) Cl(g) -> Cl+(g) + e-D) Cl+(g) -> Cl2+(g) + e-
Q:
List the elements Cs, Ca, Ne, Na, Ar in order of decreasing first ionization energy.
A) Ar > Ca > Cs > Na > Ne
B) Ne > Ar > Ca > Na > Cs
C) Ne > Ar > Na > Cs > Ca
D) Ne > Na > Cs > Ca > Ar
Q:
List the elements Na, Ca, Rb, Cl, He in order of decreasing first ionization energy.
A) He > Cl > Ca > Na > Rb
B) He > Na > Ca > Cl > Rb
C) He > Na > Cl > Ca > Rb
D) Rb > Ca > Cl > Na > He
Q:
Of the following, which element has the highest first ionization energy?
A) Cl
B) F
C) O
D) S
Q:
Most of the compounds of the 2+ ions of the first row of the transition metals from Mn to Zn are colored due to absorption of visible light promoting an electron from one 3d orbital to another. Which of these ions should tend to form colorless compounds?
A) Mn2+
B) Co2+
C) Cu2+
D) Zn2+
Q:
How many electrons are in the outermost shell of the In3+ ion in its ground state?
A) 2
B) 3
C) 6
D) 18
Q:
What is the ground-state electron configuration of the ion Hg2+?
A) [Xe]4f145d10
B) [Xe]4f145d86s2
C) [Xe]4f145d106s2
D) [Xe]4f145d106s26p2
Q:
What type of bonding is found in the compound PCl5?
A) covalent bonding
B) hydrogen bonding
C) ionic bonding
D) metallic bonding
Q:
The formula of iron(III) oxide contains ________ iron(III) and ________ oxide ions.
Q:
The element in group 7A with the least favorable (least negative) electron affinity is ________.
Q:
The ionic radius of Cs+ is ________ than the atomic radius of Cs, and the ionic radius of I- is ________ than the atomic radius of I.
Q:
The bonding in MgO is ________, whereas the bonding in CO is ________.
Q:
Which ionization process requires the most energy?A) W(g) -> W+(g) + e-B) W+(g) -> W2+(g) + e-C) W2+(g) -> W3+(g) + e-D) W3+(g) -> W4+(g) + e-
Q:
Of the following, which element has the highest first ionization energy?
A) beryllium
B) boron
C) carbon
D) lithium
Q:
Which of these ions is the largest?
A) B) C) D)
Q:
Which ion does not have a noble gas configuration in its ground state?
A) Sc3+
B) Al3+
C) Ga3+
D) As3-
Q:
In which of the following sets do all species have the same number of protons?
A) F-, Ne, Mg2+
B) Ge, Se2-, Br-
C) K+, Rb+, Cs+
D) Br, Br-, Br+
Q:
In which set do all elements tend to form anions in binary ionic compounds?
A) C, S, Pb
B) K, Fe, Br
C) Li, Na, K
D) N, O, I
Q:
What is the name for the group of elements indicated by the shaded portion of the periodic table? A) alkali metals
B) alkaline earth metals
C) inner-transition metals
D) transition metals
Q:
The following pictures represent alkali halide salts.Which salt has the highest lattice energy?A) picture (a)B) picture (b)C) picture (c)D) picture (d)
Q:
Atoms of which element, indicated by letter on the periodic table above, would be expected to have the lowest second ionization energy, Ei2?
A) A
B) B
C) C
D) D
Q:
The four spheres below represent K+, Ca2+, Cl-, and S2-, not necessarily in that order.Which sphere most likely represents the K+ ion?A) AB) BC) A or BD) C or D