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  1. Chemistry
  2. Periodic Table

Periodic Table Questions and Answers (Q&A)

What is the relative formula mass of Mg(OH)2?
N. Kingsley, Writer
Answered: Aug 23, 2018
The relative formula mass is calculated by adding up all the different atomic masses of the atoms present. The mass needs to be multiplied by the number of atoms present respectively. For...Read More

1 Answer

2851 views
What is the most likely atomic radius of element Yy?
E.Ronald
Answered: Jan 03, 2018
An element can’t be broken down any further. They are considered to be the smallest part of matter. The atomic mass of an element is the mass or weight of an element or atom. Inside of the...Read More

2 Answers

1510 views
Which pair of elements belong to the same groups in the periodic table?
W. Pratt, Marketing Analyst
Answered: Feb 26, 2019
The elements in the question are as follows based on the periodic table: A=9 (Fluorine or F), B=11 (Sodium or Na), C=17 (Chlorine or Cl), D=12 (Magnesium or Mg), and E=13 (Aluminum or...Read More

2 Answers

998 views
What is the symbol for Potassium?
Malcolm Carneal, Digital Nomad
Answered: Jul 30, 2018
Potassium is known to be a chemical element that has the symbol K. This element has a chemical number of 19. There are a lot of people who do not realize just how important potassium ions are....Read More

3 Answers

973 views
What is the atomic mass of the element in period 2, group 13?
Bobby Rickets, Content Reviewer
Answered: Dec 14, 2018
The atomic mass of the element in period 2, group 13 of the periodic table of elements is 10.81. This group of chemical elements on the periodic table is called boron. In this group you can also...Read More

2 Answers

967 views
Which element would be the better conductor of heat and electricity, Neon or Cobalt?
John Adney
Answered: Jul 12, 2017

Cobalt is a transitional element or metal which has coloured ions and has many oxidation numbers

2 Answers

855 views
What cannot be true for metalloids?
Jagran josh
Answered: Jan 19, 2025
They are good conductors of heat and electricity

1 Answer

814 views
Which element is more reactive, Potassium or Krypton?
John F. connor, Content Marketing executive
Answered: May 10, 2019
There are many elements on the periodic table. All of these elements are different in various capacities. Krypton is an element on the periodic table that many people who are not knowledgeable...Read More

2 Answers

757 views
Which Period and Group in the Periodic Table does it belong to?
Mr_wong
Answered: Jan 19, 2025
Period 5; Group 0

The correct answer is Period 5; Group 0. The atom has valence shell n = 5, hence it belongs to Period 5. In the valence shell, there are 2+6 = 8 valence electrons,...Read More

1 Answer

643 views
What is the relative formula mass of (NH4)2CO3?
John Smith
Answered: Jan 19, 2025
96

(14 + 1 x 4) x 2 + 12 + 16 x 3 = 102

1 Answer

565 views
Which things are not listed in the periodic table?
C. Perez, Writer
Answered: Jun 13, 2019
The correct answer to this question is the atomic Orbital radius. Also known as Bohr radius, the atomic orbital radius is a constant, which is physical. It is unit of length, and a0 and Bohr are...Read More

2 Answers

507 views
What is a negatively charged ion called?
John Smith
Answered: Jan 19, 2025
Anion, ANION, Anion

1 Answer

503 views
Which option is applicable to complete the following sentence?
H. callum, Content Writer
Answered: Feb 07, 2019
The correct answer to this question is C. As you move down an element group (column), the size of atoms increases. This is because each atom further down the column has more protons and neu...Read More

3 Answers

418 views
Where would you locate the element with electronic configuration 2, 8 in the modern periodic table ?
L. Brett, Sales Manager
Answered: Jun 07, 2019
The correct answer to this question is Group 18. This group is the Noble Gases. They have many characteristics which make them stand apart from other elements. These include the fact that they...Read More

3 Answers

405 views
What is the element having the largest atomic radius?
Kumarans
Answered: Jan 19, 2025
K

1 Answer

361 views

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