2. Atoms & Elements

Ions

Cation vs. Anion:  Definition, Explanation, & Examples

Isotopes and Atomic Mass

Give the correct number of protons, neutrons and electrons for the following isotope:<img src="https://static.studychannel.pearsonprd.tech/courses/general-chemistry/thumbnails/images/01773173"class="fr-fic fr-dii">.

How many protons and electrons are in each of the following ions?
(d) Au3+

What is the identity of the element X in the following ions? 
(a) X2+, a cation that has 36 electrons 
(b) X-, an anion that has 36 electrons

Cations are formed when neutral atoms lose electrons to become positively charged.

Loss of electrons by an atom does produce a cation.

Anions are formed when neutral atoms lose electrons to become negatively charged.

Correct, an atom must gain electrons to form an anion.

Isotopes of gold atoms have the same number of protons.

All gold atoms have the same number of protons.

Isotopes of gold atoms have the same number of electrons.

All gold atoms have the same number of protons and to remain neutral must have the same number of electrons.

This is true based on the nuclear theory of the atom.

 Ions form when atoms lose or gain electrons. 

Which of the following statements is false?

How many protons, neutrons, and electrons are in 107Ag+? (LO 2.21)
(a) protons = 47, neutrons = 60, electrons = 46 
(b) protons = 47, neutrons = 107, electrons = 48 
(c) protons = 60, neutrons = 47, electrons = 47 
(d) protons = 47, neutrons = 107, electrons = 46

Which neutral atom is isoelectronic with each of the following
ions? H-, Ca2+, In3+, Ge2+

What's an Ion?

GCSE Chemistry - Formation of Ions  #13

IONS - CATION & ANION  [ AboodyTV ] Chemistry

Atomic Structure (5 of 6) What are Ions? An Explanation

Determine the number of protons and the number of electrons
in each ion.
a. Ni2+

How many protons and electrons are in each of the following ions?
(c) Se2-

The Ti2 + ion is isoelectronic with the Ca atom. (c) What 
charge would Ti have to be isoelectronic with Ca2 + ?

Which represents a Ca atom with two positive electrical charges (Ca2+)?
(a) <img src="" alt="" />
(b) <img src="" alt="" />
(c) <img src="" alt="" />

In the following reaction
<img src="https://lightcat-files.s3.amazonaws.com/problem_images/ddf154f92b9d8f89-1664218523797.jpg" alt="" />
which sphere represents a metal and which represents a
nonmetal?

Determine the number of protons and the number of electrons 
in each ion. 
b. Se2-

What is an Ion?

Be sure that you have considered the ionic charge is determining the total number of electrons.

Correct, all the choices have the same number of electrons.

 Cations have fewer electrons than protons; anions have more electrons than protons. 

Fill in the blanks to complete the table.
Symbol Ion Formed Number of Electrons in Ion Number of Protons in Ion
Cl ______ ______ 17
Te ______ 54 ______
Br Br - ______ ______
______ Sr2 + ______ 38

Some ions do not have a corresponding neutral atom that has
the same electron configuration. For each of the following
ions, identify the neutral atom that has the same number of
electrons and determine if this atom has the same electron
configuration. CI-, Sc3+, Fe2+, Zn2+, Sn4+.

How many protons and electrons are in each of the following ions?
(a) Be2+

A positively charged ion is called a cation and a negatively charged ion is called an anion.&nbsp;

Which represents an F atom with one minus charge (F-)?
(a) <img src="" alt="" />
(b) <img src="" alt="" />
(c) <img src="" alt="" />

Correct,  Se will from an ion with the same number of electrons as an atom of Kr.

Halogens tend to from ions with a 1- charge.

 A main-group nonmetal tends to gain electrons, forming an anion with the same number of electrons as the nearest noble gas. 

Which of the following would most likely form an anion with a 2&#8211; charge?

Ions Concept 2

Fill in the gaps in the following table, assuming each column
represents a neutral atom.
Symbol 159Tb 
Protons 29 37 
Neutrons 34 53 
Electrons 42 34 
Mass no. 79 85
Complete the fourth row of the table.

Ions Example 1

One isotope of a metallic element has a mass number of 65 and 35 neutrons in the nucleus. The cation that this atom forms has 28 electrons. What is the symbol of the cation?

How many protons and electrons are in each of the following ions?
(b) Rb+

How many protons and electrons are in each of the following ions?
(a) Be2+
b) Rb+
c) Se2-
(d) Au3+

Ions Concept 1

Determine the number of protons and the number of electrons
in each ion.
d. Sr2+

Fill in the gaps for the following table.<img src="https://lightcat-files.s3.amazonaws.com/problem_images/df4a10c012dff617-1608568599851.jpg"class="fr-fic fr-dii">

What are Ions?

Fill in the gaps in the following table:
Symbol 133Cs+ 
Protons 35 15 
Neutrons 46 16 30 
Electrons 18 20 
Net charge 1- 5+

Fill in the gaps in the following table:
Symbol 59Co3+ 
Protons 34 76 80 
Neutrons 46 116 120 
Electrons 36 78 
Net charge 2+

What Are Ions | Properties of Matter | Chemistry | FuseSchool

In which pair are the two species both isoelectronic and isotopic?

Correct for Mg.  There two choices listed that form cations.

Correct for Al. There two choices listed that form cations.

 A main-group metal tends to lose electrons, forming a cation with the same number of electrons as the nearest noble gas. 

Which of the following would most likely form cations? (Check all that apply.)

Ions are formed from either the loss or gaining of electrons by a neutral element.

Determine the number of protons and the number of electrons 
in each ion. 
c. Ga3+

Which of the following is the symbol for the ion with a +4 charge, 30 neutrons and 21 electrons?

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1. Intro to General Chemistry

3. Chemical Reactions

4. BONUS: Lab Techniques and Procedures

5. BONUS: Mathematical Operations and Functions

6. Chemical Quantities & Aqueous Reactions

7. Gases

8. Thermochemistry

9. Quantum Mechanics

10. Periodic Properties of the Elements

11. Bonding & Molecular Structure

12. Molecular Shapes & Valence Bond Theory

13. Liquids, Solids & Intermolecular Forces

14. Solutions

15. Chemical Kinetics

16. Chemical Equilibrium

17. Acid and Base Equilibrium

18. Aqueous Equilibrium

19. Chemical Thermodynamics

20. Electrochemistry

21. Nuclear Chemistry

22. Organic Chemistry

23. Chemistry of the Nonmetals

24. Transition Metals and Coordination Compounds

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Millikan Oil Drop Experiment

The Oil Drop Experiment helped with determining the fundamental charge of the electron.&nbsp;

Ions represent elements that possess either a positive charge or a negative charge.&nbsp;

Periodic Table: Charges

Elements lose or gain electrons to have the ideal number of outer shell electrons like the noble gases.&nbsp;

Law of Definite Proportions

"Different samples of a pure chemical compound always contain the same proportions of elements by mass."

Periodic Table: Classifications

The Periodic Table contains 3 Major Classifications when describing its elements

Isotopes

Isotopes are atoms of an element that have the same atomic number, but different mass number.&nbsp;

The Atom

The atom represents the basic functional unit in chemistry

Mole Concept

The Mole Concept involves the interconversions between different unit amounts of a substance.

Periodic Table: Representative Elements & Transition Metals

The Groups of the Periodic Table can be broken down into the Representative Elements and Transition Metals

Atomic Theory

John Dalton, one of the "Fathers of Chemistry"is credited with modernizing the Atomic Theory.

Subatomic Particles

The atom is composed of 3 subatomic particles:neutrons, protons, and electrons.

Periodic Table: Elemental Forms

The elements of the Periodic Table exist in different elemental forms in the natural world

Periodic Table: Phases

Under standard conditions of temperature and pressure, the elements can exist as solids, liquids or gases

Atomic Mass

The atomic mass of an element includes the masses of all 3 subatomic particles of neutrons, protons and electrons.&nbsp;

Periodic Table: Group Names

The Periodic Table can be further classified into Periods and Groups.&nbsp;

Law of Conservation of Mass

"In a chemical reaction, no matter is created or destroyed, but instead changes form."

Calculating Molar Mass

Molar Mass is a physical property that represents the mass of a substance divided by the amount of that substance.

Rutherford Gold Foil Experiment

The Gold Foil Experiment helped with the discovery of the positively charged nucleus.

Law of Multiple Proportions

“When 2 elements (A &amp; B) form different compounds, the mass of Element B that combine with 1 g of A are a ratio of whole numbers."

Periodic Table: Element Symbols

The Element Symbols of the Periodic Table represent the abbreviated form of an element