What is the atomic number of Yttrium?
...What is the atomic number of Yttrium?
23
29
33
39
Correct answer is D
No explanation has been provided for this answer.
Determine the volume of 0.100 mol of HCl in \(0.250 mol dm^3\) of solution....
Which of the following ions is isoelectronic with neon? [3Li, 3F, 10Ne, 17CI,19K]...
What is the atomic number of Beryllium? ...
The reaction represented by the equation NaOH(aq) + HCI(aq) → NaCI(aq) + H2O(/)...