Atomic Notation HW1

What is the atomic number of this atom?

• 2
• 4
• 6
• none of the above

What is the mass number of this atom?

• 1
• 3
• 4
• 7

How many electrons does a Copper atom have?

• 63
• 29
• 92
• 34

Tags

NGSS.MS-PS1-1

What do these isotopes of carbon all have in common?

• neutrons & mass number

• atomic number and neutrons

• atomic number and protons

• protons, atomic number, and mass number

In a correctly written nuclear notation what would be located in the "A" position?

• number of neutrons

• atomic number

• number of electrons

• mass number

What is the mass number of this atom?

• 13

• 14

• 27

• 40

An ion forms when an atom gains or loses _?_.

• protons

• neutrons

• electrons

• energy levels

A neutral atom can become an ion with a +2 charge by _?_.

• losing two protons

• losing two neutrons

• losing two electrons

• gaining two electrons

How many electrons does this isotope of beryllium have?

• 9

• 5

• 4

• 2