AP Chem Final Ch 8

Place the following in order of increasing first ionization energy

B.) As < N < F

When filling degenerate orbitals, electrons fill them singly first, with parallel spins. This is known as (the)

B.) Hund's rule

Place the following in order of increasing metallic character.

B.) Na < K < Rb < Cs

Of the following, which atom has the smallest atomic radius?

B.) Te

An element from Group 2, X, reacts with chlorine gas. What is the formula of the most likely product formed?

B.) XCl2

Give the ground state electron configuration for Br ion

D.) [Ar] 4s^23d^104p^6

Give the ground state electron configuration for Pb

D.) [Xe]6s^24f^145d^106p^2

How many unpaired electrons are there in the ground state of Cl?

E.) 1

Give the number of valence electrons for Cl

E.) 7

Give the set of four quantum numbers that could represent the last electron added (using the Aufbau principle) to the Cl atom.

E.) n = 3, l =1, m = 1, s = -1/2

Give the set of four quantum numbers that represent the last electron added (using the Aufbau principle) to the Zn atom.

E.) n = 4, l = 2, m = 0, s = -1/2

Give the ground state electron congfiguration for F-

A.) 1s^2 2s^2 2p^6

Which of the following statements is TRUE?

A.) An orbital that penetrates (haha) into the region occupied by core electrons is less shielded form nuclear charge than an orbital that does not penetrate and therefore has lower energy.

Which of the following atoms has the largest atomic radius?

A.) Ca

No two electrons can have the same four quantum numbers is known as (the)

A.) Pauli exclusion principle

Which of the following have their valence electrons in the same shell?

A.) Rb, Sb, l

Identify the element that has a ground state electronic configuration of [Kr]5s^24d^5

A.) Te

A Na+ cation is smaller than a Na atom because:

A.) The sodium cation has more protons than electrons and the effective nuclear charge on the outer electrons is larger compared to the Na atom.

Chose the orbital diagram that represents the ground sate of N.

A.) [up/down arrow for 1s, up/down arrow for 2s, up arrow, up arrow, up arrow for 2p)

Give the number of core electrons for Cd

C.) 46

Electrons filling up the orbitals from low to high is known as (the)

C.) Aufbau principle

When an active metal, M, reacts with water, which substance is always one of the products produced?

C.) H2

Which atom has the largest first ionization energy in units of kJ/mol?

C.) Mg

Which element has the most negative electron affinty

C.) Se

The element that corresponds to the electron configuration 1s^2 2s^2 2p3s3p4s3d is (sorry the exponent things got blurry and i couldn't read them)

C.) chromium

The element that corresponds to the electron configuration 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^1 is

C.) scandium

Of the following , which element has the highest first ionization energy?

C.) silicon