Dichotomous keys consist of a series of statements with two choices in each step that will lead users to the correct identification. So I believe your answer would be A.
In an electrically neuteral atom, number of protons = number of electrons = atomic number.
Mass number = neutrons + protons/electrons/atomic number
Therefore,
neutrons = mass number - <span>protons/electrons/atomic number
Neutrons = 33 - 15 = 18
The answer is thus B. But this is the solution and explanation along with it as proof.</span>
The element is Magnesium
- It has total 12 electrons
it has electronic configuration
or
In valence cell it has 2 electrons and therefore its valency is 2
Answer:
- answer c is the answer
Explanation:
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