Lets See an Overview to Atomic Structure Flashcards

What do you know about atomic structures? Atoms are the smallest particles of matter, and they are the building blocks of matter; and the middle of the atoms includes protons and neutrons.

47 cards   |   Total Attempts: 182
  

Cards In This Set

Front Back
Subatomic particles can usually pass undeflected through the atom because the volume of an atom is composed of
a- an uncharged nucleus
b- largely empty space
c- neutrons
d- protons
B
Atomic Mass =
Total number of
protons
+
neutrons
Atomic number =
Number of protons
Charge-
Number of extra protons or number of extra electrons
Number of neutrons =
Mass - atomic number
Which particles are found in the nucleus of an atom?

a- electrons only
b- neutrons only
c- protons and electrons
d- protons and neutrons
D
The number of neutrons in the nucleus of an atom can be determined by
a- adding the atomic number ot the mass number
b- subtracting the atomic number from the mass number
c- adding the mass number to the atomic mass
d- subtracting the mass number from the atomic number
B
And electron has a charge of

a- 1- and the same mass of a proton
b- 1+ and the same mass as a proton
c- 1- and a smaller mass than a proton
d- 1+ and a smaller mass than a proton
C
The atomic number of an atom is always equal to the number of its
a- protons only
b- neutrons only
c- protons plus neutrons
d- protons plus electrons
A
Which subatomic particle has no charge
a- alpha particle
b- beta particle
c- neutron
d- electron
C
Which electon transition represents a gain of energy
a- from 2nd to 3rd shell
b- from 2nd to 1st shell
c- from 3rd to 2nd shell
d- from 3rd to 1st shell
A
What is the electron configuration of a sulfer atom in the ground state?
a-
b-
c-
d-
D
Which electon configuration is correct for a soduim ion?
a-2-7
b-2-8
c-2-8-1
d-2-8-2
B
Which particle has the same electron configuration as a potassiou ion?
a- fluoride ion
b- sodium ion
c- neon atom
d- argon atom
D
The nucleus of an atom of K-42 contains
a- 19 protons and 23 neutrons
b- 19 protons and 42 neutrons
c- 20 protons and 19 neutrons
d- 23 protons and 19 neutrons
A