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Group 18, the noble gases.
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∙ 14y ago
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∙ 11y agogroup 18
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How many groups and how many periods does the modern periodic table have hydrogen and helium should be counted as the first period.?
The periodic table has 18 groups ant 7 periods. Hydrogen and helium are considered members of the first period.
Why does helium and hydrogen does not come in agroup of periodic table?
Helium has 2 valence electrons and hydrogen has 1 electron. So, they are placed in different groups.
What groups of elements are in the p-block in the periodic table?
last 6 except helium :)
Which groups compose the mains group elements?
Main group elements have elements from groups 1 and 2, except hydrogen and groups 13 to 18. Main group elements are elements in groups who's lightest elements are shown by helium, lithium, boron, beryllium, carbon, nitrogen, oxygen, and fluorine.
What is helium made from?
Do you mean helium? Helium is an element, so it's made of .... helium!
How many groups and how many periods does the modern periodic table have hydrogen and helium should be counted as the first period.?
The periodic table has 18 groups ant 7 periods. Hydrogen and helium are considered members of the first period.
Why does helium and hydrogen does not come in agroup of periodic table?
Helium has 2 valence electrons and hydrogen has 1 electron. So, they are placed in different groups.
What groups of elements are in the p-block in the periodic table?
last 6 except helium :)
Do helium and selenium have any similarities?
No. they belong to different groups and hence have different properties
What is the period on the periodic table for helium?
1
Which groups compose the mains group elements?
Main group elements have elements from groups 1 and 2, except hydrogen and groups 13 to 18. Main group elements are elements in groups who's lightest elements are shown by helium, lithium, boron, beryllium, carbon, nitrogen, oxygen, and fluorine.
What is the collective name of the 8 groups that tower the metals on the periodic table?
Hydrogen, helium, lithium, beryllium, boron, carbon, nitrogen, oxygen.
What is the element name for He?
Helium Helium
What is helium made from?
Do you mean helium? Helium is an element, so it's made of .... helium!
Is the difference between helium in a jar in helium?
helium in a jar diff from helium atom
What element has 2 protons 1 neutron and 2 electrons?
Helium has 2 protons, 2 neutrons and 2 electrons. The symbol for helium is He and the atomic number is 2.
Name the noble gas withe the smallest atomic number?
He- Helium. He- Helium.
