Question

answer the questions about the following isotope $^{2}h^{+1}$
the atomic number, the number of protons, is _1___
the mass number, the number of nucleons, is 2_
the number of neutrons is 3_
the number of electrons is 4_
the charge is 5_ making it a cation
a. 0 b. 1 c. 2 d. 3 e. 4 f. -1 g. -2 h. -3 i. -4

Explanation:

Step1: Recall atomic number definition

The atomic number of hydrogen is 1, which is equal to the number of protons. So the answer for the number of protons is 1 (B).

Step2: Identify mass - number

The mass number is given as 2 in the isotope notation \(^{2}H^{ + 1}\), so the answer for the mass number is 2 (C).

Step3: Calculate number of neutrons

The formula for the number of neutrons \(n\) is \(n=A - Z\), where \(A\) is the mass number and \(Z\) is the atomic number. Here \(A = 2\) and \(Z=1\), so \(n=2 - 1=1\) (not in the given options, there may be a mis - typing in the problem setup, but based on correct calculation).

Step4: Determine number of electrons

Since it is a \(H^{+1}\) ion, a neutral hydrogen atom has 1 electron and losing 1 electron gives 0 electrons. So the answer is 0 (A).

Step5: Identify charge

The notation \(^{2}H^{+1}\) clearly shows a charge of + 1. So the answer is 1 (B).

Answer:

1. B. 1
2. C. 2
3. (Based on correct calculation should be 1, not in options)
4. A. 0
5. B. 1