S1 Day 1 Review

Front

What is the electron configuration of a Chloride (Cl-) ion?

Back

1s² 2s² 2p⁶ 3s² 3p⁶

Front

How many protons does Boron have?

Back

5

Front

What is the charge of a particle with 4 protons, 2 neutrons, and 3 electrons?

Back

+1

Front

Which element has the greater ionization energy: Magnesium (Mg) or Phosphorus (P)?

Back

Phosphorus (P)

Front

What is the average atomic mass of an element with the following isotopic composition: 4.35% at 49.9461 amu, 83.79% at 51.9405 amu, 9.50% at 52.9407 amu, and 2.36% at 53.9389 amu?

Back

51.99 amu

Front

Define ionization energy.

Back

The energy required to remove an electron from an atom or ion.

Front

What is the charge of an electron?

Back

-1

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the significance of the atomic mass unit (amu)?

Back

It is a standard unit of mass that quantifies mass on an atomic or molecular scale.

Front

What is the relationship between protons and electrons in a neutral atom?

Back

In a neutral atom, the number of protons equals the number of electrons.