The maximum number of neutrons are present in the nuclei of
The number of protons, neutrons, and electrons in \( _{71}^{175}Lu\) respectively, are:
1. 104, 71 and 71
2. 71, 71 and 104
3. 175, 104 and 71
4. 71, 104 and 71
The electron of a Br atom that experiences the lowest effective nuclear charge is:
1. 2p and 3p
2. 4p
3. 2p
4. 3p
Which among the following are isoelectronic species?
1.
2.
3.
4. None of the above
Assertion (A): | All isotopes of a given element show the same type of chemical behaviour. |
Reason (R): | The chemical properties of an atom are controlled by the number of electrons in the atom. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | (A) is false but (R) is true. |