Question 1
Which of the following correctly represent the electronic distribution in the Mg atom?

(a) 3, 8, 1
(b) 2, 8, 2
(c) 1, 8, 3
(d) 8, 2, 2

Open in App

Solution

The answer is (b).
Atomic number and the number of electrons in magnesium atom is 12. So, electronic configuration is 2, 8, 2 (because 12=2 + 8 + 2).

Suggest Corrections

Similar questions

Q. Question 1
Which of the following correctly represent the electronic distribution in the Mg atom?

(a) 3, 8, 1
(b) 2, 8, 2
(c) 1, 8, 3
(d) 8, 2, 2

Q. Question 15
The electron distribution of an aluminium atom is

(a) 2, 8, 3
(b) 2, 8, 2
(c) 8, 2, 3
(d) 2, 3, 8

Q. Question 18
Which one of the following is the correct electronic configuration of sodium?

(a) 2, 8
(b) 8, 2, 1
(c) 2, 1, 8
(d) 2, 8, 1

The electronic configurations of atoms of three elements A. B and C are (2, 8, 1), (2, 8, 6) and (2, 8, 18, 7) respectively.
Which option classifies the elements A. B and C as metals and non-metals correctly?

Answer the questions based on the given information. Numbers are written on the Chess Board as given

a_{8} = a_{1} + a_{2} + a_{3} + . . . . . . . + a_{7}

b_{8} = b_{1} + b_{2} + b_{3} + . . . . . . + b_{7}

.................
..................

h_{8} = h_{1} + h_{2} + h_{3} + . . . . . + h_{8} =

What is

a_{8} + b_{8} + . . . . + h_{8} =

Join BYJU'S Learning Program

Explore more

Electronic configuration

Standard VII Chemistry

Join BYJU'S Learning Program

Question 1 Which of the following correctly represent the electronic distribution in the Mg atom? (a) 3, 8, 1 (b) 2, 8, 2 (c) 1, 8, 3 (d) 8, 2, 2

The answer is (b). Atomic number and the number of electrons in magnesium atom is 12. So, electronic configuration is 2, 8, 2 (because 12=2 + 8 + 2).

Question 1
Which of the following correctly represent the electronic distribution in the Mg atom?

(a) 3, 8, 1
(b) 2, 8, 2
(c) 1, 8, 3
(d) 8, 2, 2

The answer is (b).
Atomic number and the number of electrons in magnesium atom is 12. So, electronic configuration is 2, 8, 2 (because 12=2 + 8 + 2).