Question

what is formed when an atom gains or loses neutrons ??

Answer 1

A positive ion is formed when an electron is removed from an atom until there are fewer elections than protons. A negative ion is formed when an atom gains electron until there are more electrons than protons

Answer 2

Answer:

$\boxed {\boxed {\sf Isotopes}}$

Explanation:

Atoms of the same element all have the same atomic number (number of protons). However, they can have different numbers of neutrons.

If an atom gains or loses a neutron, it becomes a different isotope of the element.

For example, let's look at carbon.

Carbon-12

• 6 protons and 6 neutrons
• The most abundant isotope

Carbon-14

• 6 protons and 8 neutrons
• Used in radioactive dating of previously living things.