An increase in the pressure of a gas results in a decrease in its
mass
vapour density
volume
temperature
concentration
Correct answer is C
No explanation has been provided for this answer.
X3N
XN3
X3N2
N2X
NX2
Correct answer is A
No explanation has been provided for this answer.
A sodium atom and a sodium ion have the same
number of neutrons
number of electrons
electric charge
electronic structure
chemical properties
Correct answer is A
No explanation has been provided for this answer.
In linear molecules, the bond angle is
90o
140o
109o
120o
180o
Correct answer is E
No explanation has been provided for this answer.
Group 0
Group 1
Group 4
Group 6
Group 7
Correct answer is B
No explanation has been provided for this answer.