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The n = 1 shell contains __________ p orbitals. All the other shells contain __________ p orbitals.
How many quantum numbers are necessary to designate a particular electron in an atom __________?
Which group in the periodic table contains elements with the valence electron configuration of ns²np¹ __________?
At maximum, an f-subshell can hold __________ electrons, a d-subshell can hold __________ electrons, and a p-subshell can hold __________ electrons.
A) 14, 10, 6
Which electron configuration represents a violation of the Pauli exclusion principle?
C) [↑↓] [↑↑] [↑]
Which one of the following is the correct electron configuration for a nitrogen atom?
D) [↑↓] [↑↓] [↑][↑][↑]
Elements in the modern version of the periodic table are arranged in order of increasing __________.
B) atomic mass
The first ionization energies of the elements __________ as you go from left to right across a period of the periodic table, and __________ as you go from the bottom to the top of a group in the table.
B) increase, decrease
Element M reacts with chlorine to form a compound with the formula . Element M is more reactive than magnesium and has a smaller radius than barium. This element is __________.
Na reacts with element X to form an ionic compound with the formula . Ca will react with X to form __.
An alkaline earth metal forms a compound with oxygen with the formula __________.
(The symbol M represents any one of the alkaline earth metals.)
An alkali metal forms a compound with chlorine with the formula __________.
(The symbol M represents any one of the alkali metals.)
Element X reacts with chlorine to form a compound with the formula . The oxide of element X is basic. Element X is.
All the elements in group 8A are gases at room temperature. Of all the groups in the periodic table, only group __________ contains examples of elements that are gas, liquid, and solid at room temperature.
Of the halogens, which are gases at room temperature and atmospheric pressure?
E) fluorine and chlorine
The only noble gas that does not have the ns²np⁶ valence electron configuration is__________.
In which set of elements would all members be expected to have very similar chemical properties?
A) O, S, Se
Which element would be expected to have chemical and physical properties closest to those of fluorine?
Atomic radius generally increases as we move __________.
A) down a group and from right to left across a period
Of the following, which gives the correct order for atomic radius for Mg, Na, P, Si and Ar?
D) Na > Mg > Si > P > Ar
Which of the following correctly lists the five atoms in order of increasing size (smallest to largest)?
B) F < O < S < Mg < Ba
This element is more reactive than lithium and magnesium but less reactive than potassium.
This element is __________.
There are __________ paired and __________ unpaired electrons in the Lewis symbol for a phosphorus atom.
C) 2, 3
In the Lewis symbol for a fluorine atom, there are __________ paired and __________ unpaired electrons.
D) 6, 1
The halogens, alkali metals, and alkaline earth metals have __________ valence electrons, respectively.
D) 7, 1, and 2
Which of the following would have to lose two electrons in order to achieve a noble gas electron
Which of the following would have to gain two electrons in order to achieve a noble gas electron
D) O, Se
The ability of an atom in a molecule to attract electrons is best quantified by the __________.
Electronegativity __________ from left to right within a period and __________ from top to bottom within a group.
C) increases, decreases
The type of compound that is most likely to contain a covalent bond is __________.
C) one that is composed of only nonmetals
In the periodic table, the rows are called __________ and the columns are called __________.
C) periods, groups
When a metal and a nonmetal react, the __________ tends to lose electrons and the __________ tends to gain electrons
C) metal, nonmetal
Magnesium reacts with a certain element to form a compound with the general formula MgX. What would the most likely formula be for the compound formed between potassium and element X?
The formula of a salt is XCl₂. The X-ion in this salt has 28 electrons. The metal X is __________.
Aluminum reacts with a certain nonmetallic element to form a compound with the general formula AlX. Element X is a diatomic gas at room temperature. Element X must be __________.
Chromium and chlorine form an ionic compound whose formula is CrCl₃. The name of this compound is _.
B) chromium(III) chloride
The formula for the compound formed between aluminum ions and phosphate ions is __________.
Which metal does not require to have its charge specified in the names of ionic compounds it forms?
When the following equation is balanced, the coefficients are: NH₃(g) + O₂(g)→NO₂(g) + H₂O(g)
B) 4, 7, 4, 6
When the following equation is balanced, the coefficients are: Al(NO₃) + Na₂S→ Al₂S₃ + NaNO₃
A) 2, 3, 1, 6
When the following equation is balanced, the coefficient of H₂ is: K(s) + H₂O(L) → KOH (aq)+H₂(g)
When the following equation is balanced, the coefficient of Al is: Al(s)+H₂O(L)→Al(OH)₃(s)+h₂(g)
When the following equation is balanced, the coefficient of O₂ is: C₂H₄O(g)+O₂(g)→CO₂(g)+H₂O(g)
When the following equation is balanced, the coefficient of H₂SO₄ is: H₂SO₄(aq)+NaOH(aq)→Na₂SO₄(aq)+H₂O(L)
When the following equation is balanced, the coefficient of nitric acid is: N₂O₅(g)+H₂O(L)→HNO₃(aq)
Write the balanced equation for the reaction that occurs when methanol, CH₃CH(L) is burned in air. What is the coefficient of methanol in the balanced equation?
*Methanol is actually CH₃OH
Which one of the following substances is the product of this combination reaction?
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