Chemistry Final Chapter Eight

अब Quizwiz के साथ अपने होमवर्क और परीक्षाओं को एस करें!

The central atom in ________ does not violate the octet rule.

CF4

The ________ ion has a noble gas electron configuration.

Cl-

In which of the molecules below is the carbon-carbon distance the shortest?

H-C---C-H

The only noble gas without eight valence electrons is ________.

He

Elements from opposite sides of the periodic table tend to form ________.

Ionic compounds

Resonance structures differ by ________.

Placement of electrons only

A ________ covalent bond between the same two atoms is the longest.

Single

Based on the octet rule, aluminum most likely forms a ________ ion.

Al3+

Of the atoms below, ________ is the least electronegative.

B

Of the following, ________ cannot accommodate more than an octet of electrons.

Be

Of the atoms below, ________ is the most electronegative.

C

Lattice energy is ________.

The energy required to convert a mole of ionic solid into its constituent ions in the gas phase

The Lewis structure of the CO32- ion is ________.

[:O:=C-::O:-::O:]2-

Which of the following noble gas electron configurations represents the Ru+ cation?

[Kr]5s14d6

Of the possible bonds between carbon atoms (single, double, and triple), ________.

a double bond is longer than a triple bond

Bond enthalpy is ________.

always positive

As the number of covalent bonds between two atoms increases, the distance between the atoms ________ and the strength of the bond between them ________.

decreases, increases

The Lewis structure of N2H2 shows ________.

each nitrogen has one nonbinding electron pair

A nonpolar bond will form between two ________ atoms of ________ electronegativity.

identical, equal

Electronegativity ________ from left to right within a period and ________ from top to bottom within a group.

increases, decreases

The type of compound that is most likely to contain a covalent bond is ________.

one that is composed of only nonmetals

Of the bonds C-C, C C, and C≡C, the C-C bond is ________.

weakest/longest

What is the maximum number of double bonds that a carbon atom can form?

2

How many different types of resonance structures can be drawn for the ion SO32-?

3

How many equivalent resonance forms can be drawn for CO32-? (Carbon is the central atom.)

3

How many hydrogen atoms must bond to silicon to give it an octet of valence electrons?

4

What is the principal quantum number of the last shell for the element barium?

6

The formal charge on nitrogen in NO3- is ________, where the Lewis structure of the ion is:

+1

In the Lewis structure of ClF, the formal charge on Cl is ________, and the formal charge on F is ________.

0,0

In the resonance form of ozone shown below, the formal charge on the central oxygen atom is ________.

1+

The Lewis structure of PF3 shows that the central phosphorus atom has ________ nonbonding and ________ bonding electron pair(s).

1, 3

The ability of an atom in a molecule to attract electrons is best quantified by the ________.

Electronegativity

In the molecule below, which atom has the largest partial negative charge? Cl | F— C —Br | I

F

Which of the following would have to gain two electrons in order to achieve a noble gas electron configuration? O Sr Na Se Br

O, Se

Given the electronegativities below, which covalent single bond is most polar? Element: H C N O Electronegativity: 2.1 2.5 3.0 3.5

O-H


संबंधित स्टडी सेट्स

Acute II Final: Neonatal & OB complications

View Set

Accounting Chapter 10: Stockholders' Equity

View Set

Primary Greatness by Stephen Covey (Concepts)

View Set