LINK FOR PART 1 👇👇👇
STEP-BY-STEP WRITING AND NAMING IONIC COMPUNDS | BINARY | TERNARY | STOCK SYSTEM | TRANSITION METALS
• STEP-BY-STEP WRITING &...
LINK FOR PART 2 👇👇👇
STEP-BY-STEP WRITING AND NAMING IONIC COMPUNDS | BINARY | TERNARY | STOCK SYSTEM | TRANSITION METALS
• WRITING AND NAMING ION...
LINK FOR CHEMICAL BONDING | IONIC BOND | COVALENT BOND 👇👇👇
• CHEMICAL BONDING | ION... .
A covalent bond happens between 2 nonmetals. It happens when 2 nonmetals tend to share their electrons in order to fill their outermost shell or to achieve atomic stability.
difference between ionic and covalent compounds is that the two nonmetal atoms of COVALENT COMPOUNDS will frequently combine with one another in a variety of ratios. Consider the elements nitrogen and oxygen. They combine to make several compounds including NO, NO2, and N2O.
Now in naming covalent compounds, we use numerical prefixes to identify the number of atoms of each element.
For example if there is one atom we are gonna use mono, if there are 2 atoms we’re gonna use di, if there are 3 atoms we’re gonna use tri and so on.
Now here are the rules for naming covalent compounds.
1. Generally, the less-electronegative element is written first in the formula, though there are a few exceptions. Carbon is always first in a formula and hydrogen is after nitrogen in a formula such as NH3. The order of common nonmetals in binary compound formulas is C, P, N, H, S, I, Br, Cl, O, F.
2. When naming the FIRST ELEMENT, the appropriate prefix is used only if there are more than one atom of that element in the formula. (mono - will not be use)
For example, in CO2 we’re just going to write Carbon instead of monocarbon
3. The second element is named after the first, but with the ending of the element’s name changed to -ide. The appropriate prefix is always used for the second element without exemption.
For example, the correct for CO2 is carbon dioxide
4. The a or o at the end of a prefix is usually dropped from the name when the name of the element begins with a vowel. As an example, four oxygen atoms is tetroxide instead of tetraoxide.
For example, 1 oxygen atom is written as monoxide instead of monooxide. As you can see we drop the O in mono.
Another example four oxygen atoms is tetroxide instead of tetraoxide. As you can see we drop the A in tetra because the first letter of the element is a vowel.
Негізгі бет NAMING OF COVALENT COMPOUNDS | NOMENCLATURE OF MOLECULAR COMPOUNDS | GRADE 9 SCIENCE _ CHEMISTRY
Пікірлер