chem 1 Exam 2

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

What is the name of XeF4

Xenon tetrafluoride

Enter the electron configuration of the ion formed by O

1s^22s^22p^6

Enter the electron configuration of the ion formed by K

1s^22s^22p^63s^23p^6

Beryllium has valence electron(s).

2

Calcium has valence electron(s).

2

Calculate the mass of 1.00×10241.00×1024 (a septillion) molecules of water.

29.9 g

In the ground-state electron configuration of Fe3+Fe3+, how many unpaired electrons are present?

5

Bromine has valence electron(s).

7

Xenon has valence electron(s).

8

Enter the electron configuration of the ion formed by Rb

[Kr]

Enter the electron configuration of the ion formed by Sr

[Kr]

The IE increases

across a row or group

Group 2

alkaline earth metals solutions in water

What are the possible values of the magnetic quantum number ml

all the integers in range from -l to +l, where l is an angular momentum quantum number

What are the possible values of the angular momentum quantum number l?

all the non-negative integers: 0,1,2,..., n-1, where n is a principal quantum number

What are the possible values of the principal quantum number n?

all the positive integers: 1,2,3, etc.

NH4Br

ammonium bromide

A flask contains 0.150 molmol of liquid bromine, Br2Br2. Determine the number of bromine molecules present in the flask.

9.03×1022 moleculesmolecules

Find the number of ibuprofen molecules in a tablet containing 200.0 mgmg of ibuprofen (C13H18O2).

amount = 5.839×1020 molecules of C13H18O2

negatively charged

anions

qualitative observation

are non-numerical observations

quantitive observations

are numerical aka measurements

Ba3N2

barium nitride

BaSO4BaSO4 Spell out the full name of the compound.

barium sulfate

Halogen

bromine

The Ionization energy decreases

down a column

If unpaired electrons then it is

paramagnetic and not diamagnetic

as you love left to right the atomic radius gets

smaller

NaClO4

sodium perchlorate

SrBr2

strontium bromide

What does the magnetic quantum number determine?

the orientation of the orbitalWhat does the magnetic quantum number determine?

What does the principal quantum number determine?

the overall size and energy of the orbital

no two electrons have

the same 4 quantum number

What does the angular momentum quantum number determine?

the shape of the orbital

Writing

the symbol fo the metal is written first followed by the non metal

Enter the ion formed from K

K+

Write the formula for the compound formed between potassium and sulfur.

K2S

copper(I) chloride

CuCl

Alkaline-earth metal

calcium Beryllium

positive charged ions

cations

Cations are smaller

cations are positive

Give the chemical symbol of an element in the third period (row) of the periodic table with three valence electrons.

Al

Group 1

Alkali metals soft shiny violent with water

When comparing the two species BaBa and Ba2+Ba2+ the larger of the two is

Ba

[Xe]6s2

Ba

cyanide

Be(CN)2

hydroxide

Be(OH)2

phosphate

Be3(PO4)2

chromate

BeCrO4

Between C and F, the larger atom is

C

calcium fluoride

CaF2

Between Cl and Sb , the element with the higher first ionization energy is

Cl

Sodium has valence electron(s).

1

The fuel used in many disposable lighters is liquid butane, C4H10C4H10. How many carbon atoms are in 4.00 gg of butane?

1.66×1023 carbonatomscarbonatoms

polyatomic ions are composed of two or more atoms held by a covalent bond

--

the ionization energy is the energy required to remove the electron from isolatied gaseous atom

--

Give the chemical symbol of an element in the third period (row) of the periodic table with six 3p3p electrons.

Ar

Between As and Po , the element with the higher first ionization energy is

As

iron(II) iodate

Fe(IO3)2

iron(III) hydroxide

Fe(OH)3

iron(II) phosphate

Fe3(PO4)2

Binary ionic compounds metal forms only one type of cation

Group 1 2 3 Ag Zn Sc

noble gases

Group 8

Between II and Kr, the larger atom is

I

Between Al and In, the larger atom is

In

[Kr]5s24d105p1

In

In the animation, you can see that the electrons occupy different orbitals according to the energy level of each orbital. A single box represents an orbital. The unpaired electron is represented as ↿↿ whereas the paired electrons in the same orbital are represented by two arrows pointing in opposite directions: ↿⇂↿⇂. Watch the animation and identify which of the following statements are correct.

In the LiLi atom, the 3s3s, 3p3p, and 3d3d orbitals have different energies. Electrons generally occupy the lowest energy orbital first. The CC atom has two unpaired electrons.

Between Mg and Ca , the element with the higher first ionization energy is

Mg

Give the chemical symbol of an element in the third period (row) of the periodic table with two 3s3s electrons and no 3p3p electrons.

Mg

When comparing the two species NiNi and Ni2+Ni2+ the larger of the two is

Ni

Enter the ion formed from O

O^2-

Between P and In , the element with the higher first ionization energy is

P

When comparing the two species PP and P3−P3− the larger of the two is

P^3-

lead(II) chromate

PbCrO4

Enter the ion formed from Rb

Rb+

Give the chemical symbol of an element in the third period (row) of the periodic table with four 3p3p electrons.

S

how many electrons can be put in each shell

S 2 P6 D 10 F 14

When comparing the two species S2−S2− and Ca2+Ca2+ the larger of the two is

S2−

[Ar]4s23d104p4

Se

Based on periodic properties, what two elements would you expect to be most like carbon?

Si,Ge

Between S and Sn, the larger atom is

Sn

Alkali Metal

Sodium

Enter the ion formed from Sr

Sr2+

[Ar]4s23d2

Ti

Noble

Xenon

covalent radius

equal to one half of the distance between two bonded atoms

Group 7

halogens

electron configuration

if has a plus or minus it is opposite AL3+ is minus three 10 instead of 12

ionic compounds

ionic compound is composed 3 dimensional has cairns and anions termed lattice

FeS

iron(II) sulfide

FePO4

iron(III) phosphate

as you move down a group it gets

larger

PbI4

lead(IV) iodide

Determine the mass of a sample of water containing 3.55×10223.55×1022 molecules of H2OH2O.

mass =1.06gg

ionic bonds

metals and nonmetals transfer of electrons


संबंधित स्टडी सेट्स

Infection, Immunity, Inflammation

View Set

NUR PERS - Module 5: Nursing Perspective 2

View Set

Strategic Management Chapters 5-8 Exam 2

View Set

pathopharm Chapter 38: Agents to Control Blood Glucose Levels

View Set