HESI A2 test chemistry - Atomic Structure And The Periodic Table

Elements in the modern periodic table are arranged by increasing what?

Atomic number

What does the mass number of an atom represent?

Protons and neutrons

What is the identity of an atom with 24 protons, 30 neutrons, and 24 electrons?

Chromium

What is the name given to a negatively-charged atom?

Anion

Which element is located in both Group 2 and Period 4?

Calcium

Which of the following best describes a cation?

An atom that has more protons than electrons

Which of the following best describes an ion?

A charged atom

Which of the following correctly defines the term isotope?

Atoms with the same number of protons and electrons, but a different number of neutrons.

Which of the following elements is a halogen?

Cl

Which of the following elements is a non-metal?

Chlorine

Which of the following exists as a diatomic element?

Chlorine

Which of the following elements is a metal?

Strontium

Which of the following is a property of noble gases?

They have a full octet of valence electrons

Which of the following is represented by the atomic number of an element?

An element’s number of protons

Which of the following is the correct symbol for arsenic?

As

Which of the following isotopes of iron has 26 protons, 30 neutrons, and 26 electrons?

⁵⁶Fe

Which of the following represents an ion?

6 protons, 4 neutrons, and 5 electrons

Which subatomic particle has a positive charge?

Protons

Which of the following is a true statement?

Protons have a positive charge.