GK
CHEMISTRY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
True
|
|
|
False
|
|
|
Either A or B
|
|
|
None of the above
|
Detailed explanation-1: -Answer and Explanation: FALSE. The periodic table of elements arranges the elements in order of increasing atomic number, which is the number of protons in the nucleus. The atomic mass of each element is based on both the neutrons and protons in the nucleus.
Detailed explanation-2: -Elements in the modern periodic table are arranged in increasing order of their atomic numbers, not atomic masses. Elements in the modern periodic table are decorated in increasing order of their atomic numbers, so there is no separate space for isotopes. Hence statements (i), (i) and (ii) are false.
Detailed explanation-3: -The modern periodic table lists the elements in order of increasing atomic number (the number of protons in the nucleus of an atom).