GROWTH DEVELOPMENT CHILD
SUMMATIVE ASSESSMENT
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
What is the atomic number for an element with three protons?
|
|
6
|
|
|
1
|
|
|
3
|
|
|
None of the above
|
Explanation:
Detailed explanation-1: -A lithium atom contains 3 protons in its nucleus irrespective of the number of neutrons or electrons. Notice that because the lithium atom always has 3 protons, the atomic number for lithium is always 3.
Detailed explanation-2: -Lithium is a metal whose electronic configuration is 2 and 1 including 3 protons 3 electrons and 3 neutrons.
Detailed explanation-3: -A lithium nucleus has three protons and three neutrons.
There is 1 question to complete.