What is the mass number of an element having 20 neutrons,...
What is the mass number of an element having 20 neutrons, 15 protons and 15 electrons?
15
30
35
50
Correct answer is C
Mass number = Protons = Neutrons = 15 + 20 = 35
The addition of water to calcium oxide leads to? ...
Which of the following pairs has compounds that are isomers? ...
The i.u.p.A.C name for the compound...
The electrode potential in volts of 2H+(aq) / H2(q) system is ...
Consider the following reaction equation: \(2SO_3(g) → 2SO_2(g) + O_2\)(g) ∆H = +198 kJ/mol...