true or false in an atom, negatively charged electrons surround a positively charged nucleus
True. In an atom, negatively charged electrons do indeed surround a positively charged nucleus.
To understand why this is the case, let's take a closer look at the structure of an atom. At the center of an atom is the nucleus, which is made up of positively charged particles called protons and uncharged particles called neutrons. The protons have a positive charge, which is why we call the nucleus positively charged.
Surrounding the nucleus, electrons are arranged in energy levels or shells. These electrons have a negative charge. The electrons occupy different energy levels at increasing distances from the nucleus, commonly referred to as electron shells or orbitals.
The electrons are attracted to the positive charge of the protons in the nucleus, and due to the electromagnetic force, they remain in orbit around the nucleus. The electrons occupy the lowest energy level first and fill up higher energy levels as needed. The outermost energy level, known as the valence shell, is the one that interacts with other atoms to form chemical bonds.
So, in summary, electrons, which carry a negative charge, do surround the positively charged nucleus in an atom.
1. C
2. A
3. D
4. B