S1.2.1 - Nuclear Symbols

​ Label the parts of the atom.

c

a

b

Neutron

Electron

Proton

Tags

NGSS.MS-PS1-1

​ (a)   have a +1 charge and a relative mass of ​ (b)  

• Protons
• 1
• Neutrons
• Electrons
• 0
• -1

Tags

NGSS.MS-PS1-1

Which is correct for ⁵³₂₄Cr?

• 24 neutrons and 53 nucleons

• 24 protons and 29 nucleons

• 24 protons and 29 neutrons

• 24 electrons and 53 neutrons

Tags

NGSS.MS-PS1-1

Which representation would be correct for a species, Z, which has 31 protons, 40 neutrons and 28 electrons?

• ⁷¹₃₁Z³⁺

• ⁷¹₃₁Z^3-

• ⁷¹₄₀Z³⁺

• ⁷¹₂₈Z³⁺

Tags

NGSS.MS-PS1-1

Isotopes have the same ​ (a)   properties, but different ​ (b)   properties.

• chemical
• physical

Which statement is correct for the ion ⁹₄Be⁺?

• The ion contains 15 subatomic particles in the nucleus.

• The ion contains more protons than neutrons in the nucleus.

• Most of the total volume of the ion is empty space.

• It has 9 electrons.

Tags

NGSS.MS-PS1-1

What does ⁵²₂₄X represent?

• An isotope of Te with 24 neutrons

• An isotope of Te with 24 electrons

• An isotope of Cr with 28 protons

• An isotope of Cr with 28 neutrons

Tags

NGSS.MS-PS1-1

State the number of electrons in an atom of ¹¹₅B

Mathematical Equivalence

OFF

What are the numbers of neutrons and electrons in the iodine ion, ¹²⁵I⁺?

• 53 neutrons and 53 electrons

• 72 neutrons and 52 electrons

• 72 neutrons and 53 electrons

• 125 neutrons and 52 electrons

Which statements about the isotopes of an element are correct?

I. They have the same chemical properties.

II. They have different physical properties.

III. They have the same number of protons and electrons.

• I and II only

• I and III only

• II and III only

• I, II and III

Tags

NGSS.HS-PS1-8