Answer:
The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus.
Answer: Al3+ < Zn2+ < Fe2+ < Ag+
Explanation: Oxidizing Agents can be defined as those agents which oxidized the other species by getting itself reduced.
Standard Reduction potential is the tendency of the chemical species to get reduced and is also used to determine which is better oxidizing or a reducing agent.
The E°red of the following -
= -1.66V
= -.45V
= -.76
= +.80
Thus is the best oxidizing agent among the given.
The first one is the answer
isotopes of an atom have different number of neutrons . the number of protons are not different in isotopes of an atom
Na-24 and Na-23 have the same number of atoms=11, different neutrons(13 and 12),different mass number(24 and 23)
<h3>Further explanation
</h3>
The elements in nature have several types of isotopes
Isotopes have the same number of protons and having a different number of neutrons.
So Isotopes are elements that have the same Atomic Number (Proton)
number of atoms = 11
mass number = 23
number of neutrons=23-11=12
number of atoms = 11
mass number = 24
number of neutrons=24-11=13