What is the identity of element Q if the ion Q2+ contains 10 electrons?

A) C B) O C) Ne D) Mg A) C B) O C) Ne D) Mg

Exam 2: Atoms, molecules, and Ions

Explore all topics

Methane and oxygen react to form carbon dioxide and water.What mass of water is formed if 3.2 g of methane reacts with 12.8 g of oxygen to produce 8.8 g of carbon dioxide?

(Multiple Choice)

4.8/5

(27)

Question 141

Which of the following elements has chemical properties similar to oxygen?

(Multiple Choice)

4.9/5

(28)

Question 142

What is the standard isotope that is used to define the number of atoms in a mole?

(Multiple Choice)

4.8/5

(47)

Question 143

What is the identity of element Q if the ion Q²⁺ contains 10 electrons?

(Multiple Choice)

4.7/5

(34)

Question 144

The existence of electrons in atoms of all elements was demonstrated by

(Multiple Choice)

4.8/5

(35)

Question 145

In which set do all elements tend to form anions in binary ionic compounds?

(Multiple Choice)

4.8/5

(36)

Question 146

Which of the following elements has the least tendency to form an ion?

(Multiple Choice)

4.8/5

(33)

Question 147

Gaseous elements characterized by low reactivity are found in group ________ of the periodic table.

(Multiple Choice)

4.9/5

(37)

Question 148

If shaded and unshaded spheres represent atoms of different elements,as shown in drawing (1),which drawings (2)-(4)represent the law of multiple proportions?

(Multiple Choice)

4.8/5

(36)

Question 149

Give the molecular formula corresponding to the following ball-and-stick molecular representation of vitamin C (ascorbic acid)(gray = C,unshaded = H,black = O).In writing the formula,list the atoms in alphabetical order.

(Multiple Choice)

4.9/5

(38)

Question 150

In a periodic table rows are called and columns are called .

(Short Answer)

4.9/5

(38)

Question 151

Butyric acid has the structural formula given below. What is the molecular or chemical formula for butyric acid?

(Multiple Choice)

4.8/5

(42)

Question 152

What group of elements does the shaded area in the following periodic table indicate?

(Multiple Choice)

4.9/5

(40)

Question 153

What is the mass of one atom of the element hydrogen?

(Multiple Choice)

4.9/5

(42)

Question 154

The symbol for technetium-98 is ________.

(Essay)

4.8/5

(35)

Question 155

If shaded and unshaded spheres represent atoms of different elements,as shown in drawing (1),which drawings (2)-(4)represent the law of multiple proportions?

(Multiple Choice)

4.8/5

(37)

Question 156

What is the chemical formula for calcium chromate?

(Multiple Choice)

4.8/5

(33)

Question 157

According to history,the concept that all matter is composed of atoms was first proposed by

(Multiple Choice)

4.8/5

(39)

Question 158

-If shaded and unshaded spheres represent atoms of different elements,which of the above drawings most likely represents an ionic compound at room temperature and a pressure of 1 atm?

(Multiple Choice)

4.8/5

(39)

Question 159

Which element has the chemical symbol,P?

(Multiple Choice)

4.9/5

(41)

Question 160

Showing 141 - 160 of 275

Exam 2: Atoms, molecules, and Ions

Methane and oxygen react to form carbon dioxide and water.What mass of water is formed if 3.2 g of methane reacts with 12.8 g of oxygen to produce 8.8 g of carbon dioxide?

Which of the following elements has chemical properties similar to oxygen?

What is the standard isotope that is used to define the number of atoms in a mole?

What is the identity of element Q if the ion Q2+ contains 10 electrons?

The existence of electrons in atoms of all elements was demonstrated by

In which set do all elements tend to form anions in binary ionic compounds?

Which of the following elements has the least tendency to form an ion?

Gaseous elements characterized by low reactivity are found in group ________ of the periodic table.

If shaded and unshaded spheres represent atoms of different elements,as shown in drawing (1),which drawings (2)-(4)represent the law of multiple proportions?

Give the molecular formula corresponding to the following ball-and-stick molecular representation of vitamin C (ascorbic acid)(gray = C,unshaded = H,black = O).In writing the formula,list the atoms in alphabetical order.

In a periodic table rows are called ________ and columns are called ________.

Butyric acid has the structural formula given below. What is the molecular or chemical formula for butyric acid?

What group of elements does the shaded area in the following periodic table indicate?

What is the mass of one atom of the element hydrogen?

The symbol for technetium-98 is ________.

If shaded and unshaded spheres represent atoms of different elements,as shown in drawing (1),which drawings (2)-(4)represent the law of multiple proportions?

What is the chemical formula for calcium chromate?

According to history,the concept that all matter is composed of atoms was first proposed by

-If shaded and unshaded spheres represent atoms of different elements,which of the above drawings most likely represents an ionic compound at room temperature and a pressure of 1 atm?

Which element has the chemical symbol,P?

Chemical Tools: Experimentation and Measurement

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Periodicity and the Electronic Structure of Atoms

Ionic Compounds: Periodic Trends and Bonding

Covalent Bonding and Electron-Dot Structures

Covalent Compounds: Bonding Theories and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids, solids, and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

Nuclear Chemistry

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

The Main-Group Elements

Connections to Organic and Biological Chemistry

Filters

What is the identity of element Q if the ion Q²⁺ contains 10 electrons?

In a periodic table rows are called and columns are called .