WorksheetsAtomic Structure & Reactivity
Total questions: 23
Worksheet time: 46mins
An atom with atomic number 6 would have how many protons
6
12
3
cannot be determined
How many valence electrons does a neutral atom with 15 protons have?
6 Valence Electrons
5 Valence Electrons
4 Valence Electrons
9 Valence Electrons
An electrically neutral atom consists of 15 neutrons, 13 electrons, and a number of protons. What is its mass number?
30
20
15
28
A core of ______ and_______grouped together surrounded by________.
Which of the following best completes the above statement about the structure of an atom?
electrons, neutrons, protons
protons, electrons, neutrons
protons, electrons, ions
protons, neutrons, electrons
Which of the following lists contains atoms with the highest reactivity?
He, Ne, Ar
F, Cl, Br
Zn, Cd, Hg
C, Si, B
In order to determine if two atoms are copper (Cu) atoms, what must be the same for each?
the number of valence electrons
the number of protons
the charge of the atom
the size of the atom
The identifying characteristic of an element is its number of
protons.
neutrons.
electrons.
orbitals.
An atom of tin has an atomic number of 50 and a mass number of 119. How many protons, electrons, and neutrons are found in one neutral atom of tin?
50 protons, 69 electrons, 50 neutrons
50 protons, 50 electrons, 69 neutrons
69 protons, 50 electrons, 69 neutrons
69 protons, 69 electrons, 50 neutrons
