Bromine, like Fluorine and Chlorine, is an Halogen. Halogens gain an electron to become X^(-) anion.
'X' being the general symbol for an halogen.
No, it is the last member of Carbon family.
What is the Lewis Dot Formula for Paraffin wax?
Mercury (Hg ; Hydragyrum).
It is only one of two elements that are liquids are STP.
Mercury is also known as 'Quicksilver'. Becasue a spot of it on a glass surface is impossible to pick up (quick) added to which it is silvery in solour, hence its name 'Quicksilver'.
You can have the alcohol functional group (-OH) on the end of the chain or or it can be on any carbon in the chain .
e.g.
CH3CH2CH2CH2CH2OH ( pentan-1-ol)
CH3CH2CH2CH(OH)CH3 ( pentan-2-ol)
CH3CH2CH(OH)CH2CH3 ( pentan-3-ol)
#1 ; Atomic Number (position in the Periodic Table.
#2 ' The Atomic Mass
#3 ; The number of protons and electrons (Same as Atomic Number)
#4 ; The groups and periods of elements.
#5 ; The Physical state ( solid, liquid , or gas).
Bismuth sulphate.
NB
The formula should be written as Bi2(SO4)3 . Note the use of the brackets, otherwise it indicates that there are '43' oxygen atoms in the molecule.
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Water.
Remember the equation
Moles = mass(g) / Mr (Relative Molecular Mass)
So Molar Mass(g) is = to moles X Mr.
or
Mr = mass(g) /moles
Since ther mass is 18 g and molar mass is 1 mole
Then substitute
Mr = 18g / 1 = 18
So referring to the Periodic Table. for elements with an atomic below 18 .
We have oxygen at 16 and hydrogen at 1
So 16 + 1 + 1 = 18
.
Hence oxygen + 2 hydrogen = water (H2O).
Chlorine!!!
Chlorine has two stable isotopes ; Cl-35 & Cl-37
The subatomic particle arrangemtn in them is
Cl-35 ; 17 protons, 18 neutrons, 17 electrons
Cl-37 ; 17 protons, 20 neutrons, 17 electrons.
'Na' is Sodium. The use of 'Na'. comes from the Latin name for sodium , which is 'Nadium'
Similarly
'K' is Potassium. The use of 'K'. comes from the Latin name for potassium , which is 'Kalium'
NB There are a number of other elements in the Periodic Table, where the symbol does not indicate the modern name.
The number in the subscript of a chemical formula tells the number of that atom in a molecule. For example, in H2O, the 2 tells you there are 2 hydrogen atoms in the water molecule. in C3H8, there are 3 carbon atoms and 8 hydrogen atoms as reflected by the 3 and 8 in the formula respectively.
For any element in ther periodic table., two numbers are given. They are the Atomic No. and the Atomic Mass.
The Atomic Number indicates the elements position in the periodic table.
The number of protons in the element
The number of electrons in the nuetrally charged element.
The Atomic mass is the total of all the protons and neutrons in the nucleus of an atom .
So to find the number of neutrons in an element , the difference between the Atomic Mass and the Atomic Number is the number of neutrons present.
Two examples ; -
hydrogen ; [1/1] H ; 1 - 1 = 0 so no neutrons.
chlorine ; [35/17]Cl ; 35-17 = 18 so 18 neutrons present.
NB The larger number is the Atomic Mass, usually printed at the top left of a given element. The small number is the Atomic Number, usually printed at the bottom(left) of any given element.
Francium and Fluorine. They would react instantaneously and explosively.
However, this would never be done in an open lab. , because francium is radio-active.
However, Sodium (Grp (I)) and Chlorine (Grp(VII)), will react in a gas jar in the lab. But less vigorously than the above two.
The Atmoic Number is the ;-
#1 position in the periodic table.
#2 the number of protons in the nucleus
#3 the number of electrons around the nucleus for a neutrally charged atom.
Elements in Group 14 on the Periodic Table have similar properties to carbon. These elements are carbon (C), silicon (Si), germanium (Ge), tin (Sn), lead (Pb), and flerovium (Fl). Each of these elements has two electrons in the outermost p orbital, the electron configuration ns2np2, and they tend to adopt oxidation sates of +4 (+2 for the heavier elements due to the inert pair effect). Silicon is most similar to carbon.
Potassium has the symbol 'K' . The 'K' is from Latin and means 'Kalium'.
The chemical symbol for argentum is NOT 'ag' , but 'Ag'.
Ag ( Argentum is the Latin for Silver).
NB For all elemental symbols.
#1 A single letter symbol is ALWAYS a CAPITAL letter. e.g. 'C' Carbon.
#2 A two letter symbol is written; ffirst letter is a capital letter and the second letter is always lower/small case. eg/ Au( Aurum is Latin for Gold).
NB 'Ar' is the noble gas 'Argon'.
'K' in the periodic table is the symbol for potassium . Its Latin name being 'Kalium' , hence the symbol 'K'.
NB. One letter elemental symbols are ALWAYS a CAPITAL letter. NOT small case 'k'.
Two letter elemental symbols have first letter a capital letter and the second letter as lower/small case. e.g. 'Na' Sodium (Nadium).
NaNO3 is NOT in the Periodic Table, because it is a molecule, NOT an element.
NaNO3 is sodium nitrate. It is a combination of the followinf elements which are in the periodic table. : -
1 x sodium(Na)
1 x nitrogen(N)
3 x oxygen (O)
curium belongs to the actinide series on the periodic table. The actinides are a group of elements in the seventh period of the periodic table, and they follow actinium (Ac) and precede lawrencium (Lr). The actinide series includes elements with atomic numbers from 89 to 103. Curium has the atomic number 96 and is represented by the symbol Cm.