x, y	dimensional co-ordinates (m)
u, v	velocity components along x, y directions (m/s)
A	real positive constant
B0	applied magnetic field (A/m)
C	non- dimensional fluid concentration (kg/m3)
Cp	specific heat at a constant pressure (J/kg. K)
Cw	the uniform concentration of the fluid at the plate (kg m−3)
C∞	the concentration of the fluid far away from the plate (kg m−3)
D	coefficient of mass diffusivity (m2/s)
DM	Chemical molecular diffusivity; m−2·s−1
g	acceleration due to gravity (m s−2)
Gr	thermal Grashof number
Gm	mass Grashof number
B	magnetic field vector (A/m)
E	electric field vector (c)
V	velocity vector (m/s)
Q0	heat source parameter
J	current density vector (A/m2)
Jx, Jy	current densities along x and y directions
k	permeability of porous medium (m2)
k1	thermal conductivity (W/m K)
K	permeability parameter
Kc	chemical reaction parameter (w/mk)
Kl	chemical reaction rate constant
m	Hall parameter
M	Hartmann number
N	constant
Nu	local Nusselt number
Pe	electron pressure (Pascal)
Pr	Prandtl number
qm	local surface mass flux (kg s−1 m−2)
qw	local surface heat flux (W m−2)
R	rotation parameter
S	second grade fluid
Sc	Schmidt number
Sh	local Sherwood number
Q1	radiation absorption parameter
t	time (s)
Tw	the uniform temperature of the fluid at the plate (K)
T∞	the temperature of the fluid far away from the plate (K)
u0	plate velocity (m s−1)
w	slip velocity (m s−1)
w0	scale of suction velocity
qr	radiative heat flux
Greek symbols
β	coefficient of thermal expansion of the fluid
β*	coefficient of mass expansion of the solid
θ	non-dimensional temperature (K)
$\Phi$	non-dimensional concentration (mol/m3)
ν	kinematic viscosity (m2/s)
ρ	fluid density (Kg/m3)
σ	electrical conductivity (S/m)
Ω	angular velocity (s−1)
τw	local wall shear stress (pascal)
τ	local skin friction coefficient
τe	electron collision time (s)
ωe	cyclotron frequency (e/mB)
Subscripts and superscripts
e	electrons
i	ions
w	conditions on the wall
∞	free stream conditions