Atomic Structure

Isotopes are atoms of the same element that have the same number of __________ but different number of __________ . Therefore, isotopes of the same element have different masses.

• protons, neutrons

• protons, electrons

• neutrons, protons

• electrons, protons

Select the element that has atomic number 2.

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

An isotope of Carbon has a mass number of 14, how many protons, neutrons and electrons does this isotope have? Note: Carbon atoms normally have a mass number of 12.01.

• P6, N6, E6

• P6, N8, E6

• P8, N6, E8

• P6, N14, E6

Tags

NGSS.MS-PS1-1

The number "18" in the periodic table square shows:

• atomic mass.

• atomic number.

• elemental name.

• elemental symbol.

?

• Beryllium

• Boron

• Barium

• Bromine

Tags

NGSS.MS-PS1-1

I am a metal and I have 30 electrons. My atomic mass is 65.38 amu's. What element am I? (use your periodic table)

• Chromium

• Terbium

• Uranium

• Zinc

Tags

NGSS.MS-PS1-1

This could be the dot diagram of

• Mg

• Cl

• C

• O

Tags

NGSS.MS-PS1-1

What particle decides the identity of an atom/element?

• proton

• neutron

• electron

• All of the above.

How many neutrons does this isotope of titanium have?

• 48

• 22

• 26

• 70

Tags

NGSS.MS-PS1-1

This element has 2 valance electrons and 3 electron shells.

• Beryllium

• Strontium

• Magnesium

• Calcium