Which of the following is a reasonable ground-state electron configuration?
a. 1s^2 2s^2 2p^6 3s^2
b. 1s^2 2s^2 2p^6 3s^2 3d^4
c. 1s^2 2s^2 2d^10 2p^3
d. 1s^2 2s^s 2p^3 2d^6

The answer to your question is: letter A.

Explanation:

To solve this question, we must consider the total number of electrons that can be placed in each orbital.

         Orbital                  Number of electrons

             s                                   2

             p                                  6

             d                                 10

             f                                  14

Options given

A. 1s² 2s² 2p⁶ 3s²                 This electron configuration is correct because

                                              is in agreement with the number of electrons

                                              allowed in each orbital and the correct order

                                             of them.

B. 1s² 2s² 2p⁶ 3s² 3d⁴          This electron configuration is incorrect because

                                              3d⁴ goes after 3p.

C. 1s² 2s² 2d¹⁰ 2p³                This option is incorrect because 2d¹⁰ does not

                                              exist.

D. 1s² 2s^s 2p³ 2d¹⁰            This option has 2 mistakes, s as a power does

                                              not exist and 2d¹⁰ is also incorrect.      

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.

increased stability in the completion of fluorine's outer shell.