GK
CHEMISTRY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Brain Teaser:A magnesium atom has an atomic number of 12, an atomic mass of 25, and a +2 charge. This atom would contain ____ protons, ____ neutrons, and ____ electrons.
|
|
12; 25; 2
|
|
|
12; 13; 14
|
|
|
12; 13; 10
|
|
|
None of the above
|
Explanation:
Detailed explanation-1: -Magnesium has an atomic number of 12 and a mass number of 24. So a magnesium atom has 12 protons, 12 electrons, and 12 neutrons.
Detailed explanation-2: -Its mass number is 24 and atomic number is 12.
Detailed explanation-3: -No. of neutron = Mass number(Z)-Atomic number (A) = 25-12 =13.
Detailed explanation-4: -A magnesium atom has an atomic number of 12, an atomic mass of 25, and a +2 charge. This atom would contain: 12 protons, 13 neutrons, and 10 electrons.
There is 1 question to complete.