Regents Atomic Structure Quizizz

What is the number of protons in an atom with an electron configuration of 2-5?

• 5

• 2

• 3

• 7

Tags

NGSS.HS-PS1-1

In the wave-mechanical model of an atom, an orbital is defined as

• a region of the most probable neutron location

• a region of the most probable electron location

• the straight-line path of a neutron

• the straight-line path of an electron

Which phrase describes two atoms that contain the same number of protons but a different number of neutrons?

• ions of the same element

• isotopes of the same element

• a mixture of different elements

• nuclides of different elements

All atoms of an element have the same

• mass number

• atomic mass

• number of neutrons

• number of protons

All atoms of the element vanadium must have the same

• atomic number

• mass number

• number of protons plus electrons

• number of protons plus neutrons

Tags

NGSS.HS-PS1-7

Which two elements are present in this mixture?

• A and Q

• A and E

• G and Q

• G and E

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

What is the approximate mass of an atom that has 10 electrons, 10 protons, and 9 neutrons?

• 10 u

• 19 u

• 20 u

• 29 u

Tags

NGSS.MS-PS1-1

Which electron configuration represents the electrons of an atom in an excited state?

• 2-7-3

• 2-8-2

• 2-8-8-1

• 2-8-9-2

The bright-line spectrum of an element is produced when excited-state electrons

• absorb energy and move to higher energy states

• absorb energy and move to lower energy states

• release energy and move to higher energy states

• release energy and move to lower energy states

Tags

NGSS.HS-PS4-3

Which conclusion directly resulted from the “gold foil experiment”?

• Atoms are mostly empty space.

• Atoms are hard, indivisible spheres.

• Electrons are located in shells.

• Electrons have a small mass.