Question

10. Find the number of electrons in each of the following.
a. A13+
b. 02-
c. Ca2+
d. F-
​

Answer 1

Answer:

A13+

A13+

A13+

A13+

A13+

A13+

Answer 2

Answer:

a) total number of electrons aluminum have=13 ,

number of electrons aluminum had after losing 3 electrons=13-3=10

Explanation:

b) total number of electrons oxygen have=8,

after gaining two electrons to form octet oxygen have total 8+2=10 electrons

c) total 20 electrons calcium have,

after losing two electrons it becomes 18

d) fluorine -electronic configuration 2,7.

it requires one electron to obtain it's octet

f after gaining one electron it becomes f-

so the number of electrons is 2+7+1=10 electrons