From which experiment it was concluded that entire mass and positive charge are present at the centre of an atom?

What is the positively-charged core in the centre of an atom called?

The positive charge of an atom is.

The entire mass and positive charge of an atom is concentrated into its............

What is the positively-charged particle present in an atom called?

Is the atom as a whole positively charged ?

Name the positively charged particle present in the atoms of all the elements.

A crystalline solid has simple cubic structure in which P atoms are present at the corners, Q atoms are present at the edge centres and R atoms are present at the centre of the unit cell. What is the formula of the compound?