Determining Protons, Electrons, and Neutrons for Elements

What element contains 7 protons and 5 valence electrons?

• Boron

• Vanadium

• Nitrogen

• Lithium

The atomic number of an element is equal to its number of protons. Therefore, a logical conclusion is that the number of protons determines an element’s-

• Mass and atomic weight.

• The number of stable isotopes.

• Identity

• State of matter

Which statement would be most helpful in identifying an element?

• The element has 36 protons

• The element has 6 neutrons

• The element has 8 valence electrons

• The element has properties similar to nitrogen

Subpart of an atom with a positive charge

• proton

• neutron

• electron

• element

Where protons and neutrons are located

• atom's nucleus

• atom's electron cloud of shells

• atom's edge

Tags

NGSS.MS-PS1-1

Which subpart of the atom is responsible for determining what the substance is?

• neutron

• proton

• electron

• all of the above

Tags

NGSS.MS-PS1-1

Which subpart of the atom is responsible for bonding with other atoms?

• neutrons

• protons

• electrons

• all of the above

How many electrons are in Potassium

• 19

• 39

• 20

• 58

Tags

NGSS.MS-PS1-1

How many neutrons are in magnesium?

• 12

• 24

• 25

• 36

Tags

NGSS.MS-PS1-1

How many electrons are in Aluminium?

• 40

• 27

• 13

• 14

Tags

NGSS.MS-PS1-1