Question

The mass number of an atom is 27 . M shell of this atom contains 3 electrons. (a) Write the electronic configuration of this atom ? (b) What is the atomic number of this atom ? (c) How many neutrons are present in this atom ? ​

Answer 1

Answer:

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Answer 2

Concept Introduction:

In the periodic table, an element's mass number, which is specific to that element, is given immediately next to the symbol for that element. An element's mass number and atomic number are not the same.

Explanation:

We have been given a question about an element.

We have to find the answers related to its electronic configuration.

The element is aluminum (Al)

Electronic configuration of this atom = $K= 8, L= 18, M= 3$

The atomic number of this atom = $27$

Neutrons are present in this atom = $14$

Final Answer:

The final answer is the element is aluminum.

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