Question

The electronic configuration which corresponds to an alkali metal is a)2,2 b)2,8,7 c) 2,8,1 d) 2,8,8,​

Answer 1

Answer:

c)2,8,7

Explanation:

i hope its help you

Answer 2

The electronic configuration which corresponds to an alkali metal is c) 2,8,1.

Given:

Electronic configuration of 4 elements:

a) 2,2

b) 2, 8, 7

c) 2, 8, 1

d) 2, 8, 8

To find:

Electronic configuration of alkali metal.

Explanation:

• To identify the electronic configuration of alkali metal, the name of the elements to which the given electronic configuration belongs to must be first identified.
• Accordingly, the elements, as well as their electronic configuration, are as follows:

a) 2, 2

• 2,2 denotes that the atomic number of element is 4, and the element with atomic number 4 is beryllium.
• Beryllium is an alkaline earth metal.

b) 2, 8, 7

• 2,8,7 denotes that the atomic number of element is 17, and the element with atomic number 17 is Chlorine.
• Chlorine is a Halogen.

c) 2,8,1

• 2,8,1 denotes that the atomic number of element is 11, and the element with atomic number 11 is sodium.

• Sodium is an alkali metal.

d) 2, 8, 8

• 2,8,8 denotes that the atomic number of element is 18, and the element with atomic number 18 is Argon.
• Argon is a Nobel gas.

• From the above data it is inferred that the electronic configuration which corresponds to an alkali metal is c) 2,8,1.

Learn more about electronic configuration

Electronic configuration of Iron,Cobalt,Nickel?

https://brainly.in/question/1065390

Is it possible to write down the electronic configuration of an atom if we know its atomic number ?why is it so?

https://brainly.in/question/2187730