When you toast bread it is a physical change. Hope this helps! :-)
Explanation:
More is the mass of directly attached atom more will be the priority of the group attached to the alkyl or aryl chain.
Atomic mass of oxygen is 16, nitrogen is 14, carbon is 12, and hydrogen is 1.
This means that as the atomic mass of oxygen is greater than rest of the given atoms. So, priority will be given to the oxygen atom.
Thus, we can conclude that the given groups are placed in order of decreasing priority as follows.
-OH > > -COOH > -H
Answer : The correct option is, forms of the same element that differ in the number of neutrons in each atom
Explanation :
Isotopes : It is defined as the forms of same element that have the same number of protons and electrons but differ in the number of neutrons.
For example : Carbon-12, carbon-13 and carbon-14 is an isotopes due to the same number of protons and electrons and different number of neutrons.
Carbon-12
Atomic number = 6
Atomic mass = 12
Atomic number = Number of protons = Number of electrons = 6
Number of neutrons = Atomic mass - Atomic number = 12 - 6 = 6
Carbon-13
Atomic number = 6
Atomic mass = 13
Atomic number = Number of protons = Number of electrons = 6
Number of neutrons = Atomic mass - Atomic number = 13 - 6 = 7
Carbon-14
Atomic number = 6
Atomic mass = 14
Atomic number = Number of protons = Number of electrons = 6
Number of neutrons = Atomic mass - Atomic number = 14 - 6 = 8