What is the element name and reactivity of an atom with 17 protons and 7 valence electrons?

The element is Chlorine (Cl), and it has high reactivity

When placed in water, Sodium catches fire. This shows that properties of the elements in the same group as Sodium have-

the tendency to be highly reactive

Most of the mass in any atom is -

contained in the atom's nucleus

On the periodic table, the elements in the columns have the same number of -

electrons in their outer shells

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Periodic Table Quiz Review

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Questions 13

Answers

1
Which of the following is NOT a property of a metal?
Brittle (breaks easily)
Conductivity (heat and electricity)
Luster (shininess)
Malleability (able to bend and flatten)
2
What is the element name and reactivity of an atom with 17 protons and 7 valence electrons?
The element is Chlorine (Cl), and it has high reactivity
The element is Chlorine (Cl) and it has low reactivity
The element is Chromium (Cr), and it has high reactivity
The element is Chromium (Cr) and it has low reactivity
3
Using the model below, identify the atom it represents.
Sulfur (S)
Carbon (C)
Sodium (Na)
Boron (B)
4
Where are the metals located on the Periodic Table of Elements?
under the table
On the stair step
On the right side
On the left side
5
Which two elements on the periodic table are in the same Period?
Sn and Rb
Se and Te
K and Ba
F and Cl
6
Atoms of which two elements have a combined total of 14 protons?
Carbon (C) and Nitrogen (N)
Helium (He) and Magnesium (Mg)
Titanium (Ti) and Beryllium (Be)
Boron (B) and Oxygen (O)
7
Which two elements are in the same Group?
P and S
B and Ge
K and Ca
Ar and Xe
8
When placed in water, Sodium catches fire. This shows that properties of the elements in the same group as Sodium have-
properties of metals and nonmetals
a full set of eight electrons in their outer shell
brittle textures so they dissolve in water
the tendency to be highly reactive
9
Elements in the same group on the periodic table have -
a full set of valence electrons
similar properties
brittle texture
properties of metals and nonmetals
10
An element's reactivity and other chemical properties are determined by the number of...
valence electrons
shells in an atom
isotopes it has
oxidation states
11
Most of the mass in any atom is -
contained in the atom's neutrons
contained in the atom's nucleus
in neither the nucleus nor the cloud surrounding the nucleus
found in the cloud surrounding the nucleus
12
On the periodic table, the elements in the columns have the same number of -
electrons
electrons in their outer shells
protons in their outer shells
neutrons
13
How many valence electrons are in an atom of each element in Group 13 in the Periodic Table?
two
three
eight
one

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