Atomic Structure

In standard nuclear notation, what does Z represent?

• The number of nucleons

• The number of neutrons

• The number of protons

• The number of electrons

A certain element is known to exist as two different isotopes.

State one thing that is the same for atoms of both isotopes.

• The number of protons

• The number of nucleons

• The number of neutrons

• The number of quarks

Energy of electron in first orbit of Hydrogen

• -2.18 x 10^-18

• 2.18 x 10^-18

• -2.18 x 10¹⁸

• 2.18 x 10¹⁸

Tags

NGSS.HS-PS1-1

g- subshell start from

• 2nd energy level

• 3rd energy level

• 4th energy level

• 5th energy level

The Equation for Heisenberg Uncertainity Principle is

• Δx X Δp ≥ h/4π

• Δx X Δp ≤ h/4π

• Δx X Δp ≥ h/2π

• Δx X Δp ≥ 4h/π

Orbital that is not possible

• 2d

• 3s

• 4p

• 5f

Correct electronic configuration of copper is

• [Ar] 3d⁹ 4s²

• [Ar] 3d¹⁰ 4s²

• [Ar] 3d¹⁰ 4s¹

• [Ar] 3d⁹ 4s¹

Tags

NGSS.HS-PS1-1

Wave length of an electron moving with velocity 2.05 x 10⁷ m/s

• 3.55 x 10^-11 m

• 4.55 x 10^-11 m

• 3.55 x 10^-10 m

• 3.00 x 10^-11 m

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

How many subshell are associated with n=4

• 2

• 3

• 4

• 5

Which has more energy

• 4s

• 4p

• 4d

• 4f