Question

1. As shown in the video you made a firki and when you hold it in the hand it rotates. Give
reason of its rotation.
से
सारी को जन आप दाश में लेते हैं तो वह गोल-​

Answer 1

Explanation:

Unlike protons, electrons can move from atom to atom. If an atom has an equal number of protons and electrons, its net charge is 0. If it gains an extra electron, it becomes negatively charged and is known as an anion. If it loses an electron, it becomes positively charged and is known as a cation.