The modern day periodic table is organized by what?

Question

a
Number of Neutrons
 b
Number of Protons
 c
Number of Electrons
Question 8
Two of most unique elements on the periodic table are hydrogen and helium. What makes them so unique and removed from the other groups on the periodic table?

a
Unlike all other elements, hydrogen and helium are gases
 b
Unlike all other elements, hydrogen and helium are not considered metals
 c
Unlike all other elements, hydrogen and helium only have a maximum of 2 valence electrons
 d
Unlike all other elements, hydrogen and helium have very limited properties
Question 9
The periodic table groups elements into which of the following three categories?

a
Solids, Liquids, Gases
 b
Heavy, Light, Medium
 c
Dense, Expanded, Compressed
 d
Metals, Nonmetals, Metalloids
Question 10
Which of the following are most likely to form a stable ionic bond

a
Carbon (Period IVA) and Oxygen (Period VIA)
 b
Lithium (Period IA) and Fluorine (Period VIIA)
 c
Magnesium (Period IIA) and Iron (Period VIIIB)
 d
Potassium (Period IA) and Tin (Period IVA)

GPT-4o mini · Answer

Here are the answers for your questions:

Question 7 The modern day periodic table is organized by: b. Number of Protons
(The periodic table is organized based on atomic number, which corresponds to the number of protons in an atom.)

Question 8 Two of the most unique elements on the periodic table are hydrogen and helium. What makes them so unique and removed from the other groups on the periodic table? c. Unlike all other elements, hydrogen and helium only have a maximum of 2 valence electrons
(Hydrogen has 1 valence electron and helium has 2; this is unique compared to most other elements, particularly those in the groups.)

Question 9 The periodic table groups elements into which of the following three categories? d. Metals, Nonmetals, Metalloids
(This is the most widely accepted classification of elements on the periodic table.)

Question 10 Which of the following are most likely to form a stable ionic bond? b. Lithium (Period IA) and Fluorine (Period VIIA)
(Lithium, a metal, can readily lose an electron to become Li+, and fluorine, a nonmetal, can gain an electron to become F-, resulting in a stable ionic bond.)