Question

A) Which feature defines a neutral atom? (1 point)
the ability to change to another substance during a chemical reaction
a full outer electron shell
the number of electrons equal to the number of protons
a low level of reactivity
A) What are valence electrons? (1 point)
the electrons in an atom’s outermost energy level
electrons that are exchanged between atoms
electrons that are shared between atoms
the electrons surrounding an atom’s nucleus
A) Why do atoms exchange or share electrons during bonding? (1 point)
to have eight inner level electrons
to obtain a full outer electron shell
to attract an ion with the opposite charge
to become neutral

Answer 1

A) The feature that defines a neutral atom is **the number of electrons equal to the number of protons**.

A) Valence electrons are defined as **the electrons in an atom’s outermost energy level**.

A) Atoms exchange or share electrons during bonding **to obtain a full outer electron shell**.

Answer 2

How many valence electrons are in an atom of the element fluorine?
(1 point)
eight
five
two
seven
Which change is likely to happen to an atom of the element strontium (Sr) during bonding?
(1 point)
It will give up electrons, forming a negative ion.
It will gain electrons, forming a positive ion.
It will give up electrons, forming a positive ion.
It will gain electrons, forming a negative ion.

Answer 3

Fluorine has **seven** valence electrons.

During bonding, an atom of strontium (Sr) is likely to **give up electrons, forming a positive ion**.