PCAT Physics Practice test 1 & Answer key

1) what is the atomic number A of Hydrogen

A. 1
B. 2
C. 0
D. 3

2)Neutron number N=?

A. A-Z
B. A+Z
C. A-Z-1
D.A-Z+1

3)which particule has mass but no charge

A. electron
B. proton
C. neutron
D. photon

4)what is electron energy of hydrogen in level n=1

A. 13.6 e.v
B -13.6 e.v
C  1.36 e.v
D  136 e.v

5) What is the maximum number of electrons in the orbital d?
A. 6
B.10
C.12
D.14


6)if the quantum number $\ell$=3 how many value of $m_{\ell}$ exist ?


A. 2
B. 3
C. 6
D. 7


Answer key


1.A
2.A
3.C
4.B
5.D
6.D