Answer:
radio telescope
Explanation:
We use radio telescopes to study naturally occurring radio light from stars, galaxies, black holes, and other astronomical objects. We can also use them to transmit and reflect radio light off of planetary bodies in our solar system.
Answer:
sodium has got ionic bonds that are weak
compared to hydrogen covalent bonds that are strong
<span>The wave nature of an electron is indicated by its motion and the diffraction and interference of electrons in a beam.</span>
