Is there anything inside atoms that make them to be same or different?

Can the value of 'Z' be same for two different atoms?

What is that holding them together in atoms?

The radii of two of the first four Bohr orbits of the hydrogen atom are in the ratio 1:4. The energy difference between them may be

The radii of two of the first four Bohr orbits of the hydrogen atom are in the ratio 1:4. The energy difference between them may be

Why are the atoms of different elements different?

Two vectors of same physical quantity are unequal if (a) They have the same magnitude and same direction (b) They have different magnitudes but same direction (c) They have same magnitude but different directions (d) They have different magnitudes and different directions

List out ingredientys needed to make vada. Are they same for dosa ? Identify the differences in your list.

A person wishes to make up as many different parties of 10 as he can out of 20 friends, each party consisting of the same number. The number of ways that the same man is found in different parties is

Living things and non living things : Do all living things have common characteristics that make them different from non-living things?