0
Hydrogen is placed in group-1 and period-1 in the Periodic Table as hydrogen has only one electron.
Wiki User
∙ 9y ago
Add your answer:
Earn +20 pts
What are elements in the first group of period table called?
alkali metals
How does the numbers of electrons change across a period of elements?
The number of valence electrons for the elements increases across a period, from 1 (group 1) to 8 (group 18).
Which group of the main group elements contains the largest elements - Atomic Radius?
Group-1 has largest atomic radius. It decreases across a period
What element is found in period 3 group 1?
Aluminium also known as Aluminum is found in group 3 period 3.
Where can you find the six elements in an organic compound in the periodic table?
carbon (group 14, period 2) hydrogen (group 1, period 1) nitrogen (group 15, period 2) oxygen (group 16, period 2) sulphur (group 16, period 3) halogens (group 17, period 2-5)
Give the period and group in which each of these elements is found nitrogen sodium iodine and mercury?
Nitrogen is period 2, group 15. sodium is period 3 group 1, iodine is period5 group 17. mercury is period 6 group 12.
What are the periods and groups in which these elements are found nitrogen sodium iodineand mercury?
nitrogen- group 15; period 2 sodium- group 1; period 3 iodine- group 17; period 5 mercury- group 12; period 6
What are elements in the first group of period table called?
alkali metals
How does the number of valence electrons for elements across a period?
The number of valence electrons for the elements increases across a period, from 1 (group 1) to 8 (group 18).
How does the numbers of electrons change across a period of elements?
The number of valence electrons for the elements increases across a period, from 1 (group 1) to 8 (group 18).
What element is found in group 7 and period 6?
there is no element found in such a place because that spot doesn't exist. there is a period 4-7 but not 1-3 for group 6. that particular spot is open and doesn't include any elements
How many Group 17 elements are in Period 3 of the Periodic Table?
Group 17 elements (Halogens)Fluorine- Period 2Chlorine- Period 3Bromine-Period 4Iodine- Period 5Astatine- Period 6Ununseptium-Period 7There is 1 element from Group 17 that is part of Period 3.
How many group 17 elements are in periodic 3 of the periodic table?
Group 17 elements (Halogens)Fluorine- Period 2Chlorine- Period 3Bromine-Period 4Iodine- Period 5Astatine- Period 6Ununseptium-Period 7There is 1 element from Group 17 that is part of Period 3.
What are the elements in group 1 called in the period table?
Alkali Metals
Which group of the main group elements contains the largest elements - Atomic Radius?
Group-1 has largest atomic radius. It decreases across a period
Which two groups of elements are never found uncombined in nature?
group 1 elements
What elements are found in Group 1A sometimes referred to as Group 1?
Potassium and Hydrogen
