Worksheets7.1: Ions
Total questions: 19
Worksheet time: 17mins
The number of valence .................... in an atom of an element is related to the element's group number in the periodic table.
electrons
protons
neutrons
Valence electrons are the electrons in the ............... occupied energy level of an element's atoms
highest
lowest
To find the number of valence electrons in an atom of a representative element, simply look at its ............... number.
group
period
................................. are diagrams that show valence electrons in the atoms of an element as dots.
Electron dot structures
Proton dot structures:
Neutron dot structures:
states that “in forming compounds, atoms tend to achieve the electron configuration of a noble gas”.
The octet rule
The triads rule
Hund's rule
Atoms of nonmetals tend to lose their valence electrons.
True
False
An atom is electrically neutral because it has equal numbers of protons and electrons.
True
False
An ion forms when an atom or group of atoms loses or gains electrons
True
False
A positively charged ion, or a cation, is produced when an atom gains one or more valence electrons.
True
False
An anion is an atom or group of atoms with ................ charge.
a negative
a positive
no
...................... is produced when an atom gains one or more valence electron
An anion
A cation
A compound
Ions produced when atoms of chlorine and other halogens gain electrons are called ................ ions.
halide
metalloids
Alkaline
How many valency electrons are in potassium.
19K
1
5
7
How many valency electrons are in oxygen.
8O
5
6
7
How many electrons will magnesium element gain or lose in forming an ion.
12Mg
2
4
8
How many electrons will lithium element gain or lose in forming an ion.
3Li
1
3
5
How many electrons will bromine element gain or lose in forming an ion.
35Br
1
3
5
Draw the electron dot structure for carbon.
6C
Draw the electron dot structure for fluorine.
9F
