It's C ^^ she's right
**Mass spectrograph **is an instrument which is used to determine the relative masses of atoms.
What is an atom?
An atom is defined as the smallest unit of **matter which forms an element. **Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.
The protons are positively charged and** neutrons** are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.
Atoms of the same element are similar as they have number of** sub- atomic particles **which on combination do not alter the chemical properties of the substances.
Learn more about atom ,here:
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The instrument directly used to determine the relative masses of atoms is the mass spectrograph . It operates by ionizing samples, measuring the mass-to-charge ratios of ions, and producing a mass spectrum. Thus, the correct option is C. Mass spectrograph .
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