1.The table below shows the proton numbers of elements P,Q,R,S and T.
Element Proton number
P 8
Q 12
R 16
S 18
T 20
In which of the following pairs do the particles have a similar number of electrons?
I P2- and Q2+
II R2- and S
III T2+ and S2-
IV P and S
A I and II only
B III and IV only
C I,II and III only
D I,II,III and IV
Please help me answer this question and tell me how do you get the answer.Thank you very much.
Element Proton number
P 8
Q 12
R 16
S 18
T 20
In which of the following pairs do the particles have a similar number of electrons?
I P2- and Q2+
II R2- and S
III T2+ and S2-
IV P and S
A I and II only
B III and IV only
C I,II and III only
D I,II,III and IV
Please help me answer this question and tell me how do you get the answer.Thank you very much.