Answered

At Westonci.ca, we connect you with the best answers from a community of experienced and knowledgeable individuals. Join our platform to connect with experts ready to provide precise answers to your questions in different areas. Get quick and reliable solutions to your questions from a community of experienced experts on our platform.

An atom of a mystery element contains 7 protons, 7 neutrons, and 7 electrons.
What is the mass number?
A. 14
B. 7
C. 0
D. 21

Sagot :

ROYADE

A-14

Explanation:

Mass number (MN) = Proton number + Neutron number

MN=7+7

MN=14

We appreciate your visit. Our platform is always here to offer accurate and reliable answers. Return anytime. We hope this was helpful. Please come back whenever you need more information or answers to your queries. Discover more at Westonci.ca. Return for the latest expert answers and updates on various topics.