Periodic Table of Elements

Question 1

What is the atomic mass of Oxygen?

Accepted Answer

16

Question 2

The MAXIMUM number of V e- that can be the LAST energy level (except for the first level) is...

Accepted Answer

8

Question 3

How is the periodic table of elements organized?

Accepted Answer

by atomic number

Question 4

What group and period is Magnesium found in?

Accepted Answer

group 2, period 3

Question 5

The green elements are what type of elements?

Accepted Answer

metalloids

Question 6

How many valence electrons are there in an atom of Sulfur (S)?

Accepted Answer

6

Question 7

How many protons, electrons and neutrons are there in this element?

Accepted Answer

p= 76, e= 76, n= 114

Question 8

What is the family/Group called of the gray part (number 5) below?

Accepted Answer

Noble or Inert Gases

Question 9

The MAXIMUM number of Valence Electrons that can be in the first energy level is....

Accepted Answer

2

Question 10

To the LEFT of the staircase are the....

Accepted Answer

metals

Question 11

What is the densist part of an atom?

Accepted Answer

nucleus

Question 12

Identify the atomic number:

Accepted Answer

17

Question 13

how many energy levels are there in an atom of Calcium (Ca)?

Accepted Answer

4

Question 14

Which group/family is the MOST reactive?

Accepted Answer

Alkalai Metals

Question 15

What element has 77 electrons?

Accepted Answer

Iridium

Questions 15