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Periodic Table
The Periodic Table is a tabular arrangement of the elements in increasing order oftheir atomic numbers, so that elements with similar properties are in the same column. There are 18 columns, called groups, and seven rows, which are called periods, in the modern periodic table. Questions about the Periodic Table: its history and creation, trends, groups/families, and periods are asked in our Periodic Table category.
11,356 Questions
How many electrons does strontium lose to satisfy the octet rule?
Strontium typically loses 2 electrons to satisfy the octet rule. Since strontium is in group 2 of the periodic table, it has 2 valence electrons. By losing these two electrons, it attains a stable electron configuration similar to a noble gas.
What happens when you add cacc3 and hci together?
When you add CaCC3 and HCl together, a reaction can occur where the HCl will likely dissociate into H+ ions and Cl- ions in solution due to its acidic nature. The CaCC3 compound may also dissociate into its ions. However, the specific products of the reaction would depend on the exact chemical properties of CaCC3.
Why are the elements Na and Cl2 extremely dangerous?
Sodium (Na) is highly reactive with water, which can lead to fires or explosions. Chlorine gas (Cl2) is toxic and can cause severe respiratory irritation or damage. When combined, sodium and chlorine form sodium chloride (table salt), which is safe to consume in moderate amounts.
What does gs stands for in periodic table?
Gs on the periodic table stands for gigasecond, which is a unit of time equal to one billion seconds. It is not a chemical element or abbreviation for an element.
Which has higher eleetron affinity between nitrogen and carbon?
Nitrogen has a higher electron affinity than carbon. This is because nitrogen, being in Group 15 of the periodic table, has one additional electron in its p orbital compared to carbon, which is in Group 14. Therefore, nitrogen has a greater tendency to accept an additional electron to achieve a stable electron configuration.
The periodicity observed in physical and chemical properties of an atom is primarily due to the arrangement of electrons in energy levels or shells around the nucleus. The periodic table organizes elements based on their atomic number, which corresponds to the number of protons in the nucleus. This arrangement influences the elements' electronic structure and, consequently, their properties.
In the future a new halogen may be synthesized. Predict its atomic number and properties?
It is difficult to predict the specific atomic number of a hypothetical new halogen. Generally, halogens are known for their high reactivity, tendency to form salts, and distinctive coloration in various compounds. The new halogen may exhibit similar properties to the existing halogens, such as fluorine, chlorine, bromine, iodine, and astatine.
How is each element placed in the periodic table?
Elements are arranged into rows in order of increasing mass, so that elements with similar properties were in the same column. They are organized by type, such as nonmetals, metals, and metalloids, and solids, liquid, gas, or not found in nature.
Which elements in the periodic tables are transition elements?
Transition metals are the element in groups 3 through 12 of the periodic table.
Scandium
Titanium
Vanadium
Chromium
Manganese
Iron
Cobalt
Nickel
Copper
Zinc
Yttrium
Zirconium
Niobium
Molybdenum
Technetium
Ruthenium
Rhodium
Palladium
Silver
Cadmium
Hafnium
Tantalum
Tungsten
Rhenium
Osmium
Iridium
Platinum
Gold
Mercury
Rutherfordium
Dubnium
Seaborgium
Bohrium
Hassium
Meitnerium
Ununnilium
Unununium
Ununbium
How Are Groups On A Periodic Table Numbered?
Groups on the periodic table are numbered from 1 to 18, with the group number corresponding to the number of valence electrons in the elements of that group. Group 1 elements have 1 valence electron, group 2 elements have 2 valence electrons, and so on. Groups 1, 2, and 13-18 are known as the main group elements.
What are the Latin names in periodic table?
Eleven elements have names in Latin. Here they are, in ascending atomic number:
- Sodium (Latin: natrium)
- Potassium (Latin: kalium)
- Iron (Latin: ferrum)
- Copper (Latin: cuprum)
- Silver (Latin: argentum)
- Tin (Latin: stannum)
- Antimony (Latin: stibium)
- Mercury (Latin: hydragyrum)
- Gold (Latin: aurum)
- Lead (Latin: plumbum)
However, there are other elements whose names come from a Latin form of a word in another language. For example, bismuthcomes from the Modern Latin word bisemutum, which in turn comes from the German word wismuth , further from German weiße masse "white mass" (bismuth has an almost purely white color in its pure metallic form).
There are also elements whose English names are based on Latin words that enter English somehow. For example, carbon gets its name from the French word charbone, which comes from the Latin word carbo "charcoal."
As you move from left to right across a period, the atomic number increases, leading to a higher number of protons and electrons in the atom. This results in changes in the atom's size, ionization energy, and electronegativity due to the increase in nuclear charge. Moving down a group, the number of electron shells increases, leading to a larger atomic size and higher reactivity due to the presence of more energy levels and electrons.
Why does the number of electrons increase as you go from top to bottom of the periodic table?
Electronic affinity increases as you move up a group, because going up a group there are fewer energy levels that stand between the postively charged nucleus and the outer level electrons. This doesn't really come into play as much as the trend moving across periods though. Electron affinity goes up left to right across a period, because as you approach the non-metals, the desire for atoms to gain electrons to satisfy the octet rule/achieve noble gas configuration goes up. By the time you reach the halogens (group 17), that affinity is very high, which makes the halogens the most reactive non-metals.
What is the nonmetal family of the periodic table that wants to gain lose or share four electrons?
The nonmetal family of the periodic table that wants to gain, lose, or share four electrons is the carbon family or Group 14. Elements in this group have four valence electrons and can form covalent bonds by sharing these electrons, such as carbon in organic compounds.
How many atoms are in Clorox beach?
Clorox bleach (sodium hypochlorite) is a compound composed of sodium, oxygen, and chlorine atoms. Each molecule of sodium hypochlorite contains 1 sodium atom, 1 oxygen atom, and 1 chlorine atom. So in one molecule of Clorox bleach, there are a total of 3 atoms.
Are the alloys in the periodic table why or why not?
No, alloys are not listed in the periodic table because they are mixtures of two or more different elements. Alloys are created by combining metals together to improve their properties, such as strength or resistance to corrosion, and therefore do not have a specific place in the periodic table.
What are the names and numbers of the groups that are metals?
Some common metals include Group 1: Alkali metals (e.g., sodium, potassium) Group 2: Alkaline earth metals (e.g., calcium, magnesium) and Transition metals (e.g., iron, copper), which are found in Groups 3-12 of the periodic table.
Which element does gallium have more in common with germanium or indium?
Gallium has more in common with indium. Both gallium and indium are part of the same group on the periodic table, Group 13 (or Group IIIA), so they share similar chemical properties and trends. Germanium, on the other hand, is in Group 14 and therefore differs in its properties from gallium.
What does Na stands for in the periodic table?
Na stands for sodium in the periodic table. It is a chemical element with atomic number 11. Sodium is a soft, silvery-white metal that is highly reactive and is an essential element for human health.
What group of elements reacts vigorously with water and halogens?
All of the alkali metals, periodic column 1 excluding hydrogen in a wide form periodic table, and all but the two lightest alkaline earth elements, periodic table column 2 excluding beryllium and magnesium, have the reactivity specified by the question.
What value was true in predicting the properties for gaps in mendeleev's table?
The value of predicting the properties for gaps in Mendeleev's table was in providing a systematic way to identify missing elements and their properties based on the known trends of elements within the table. This predictive power allowed for the discovery and confirmation of new elements that filled the gaps, contributing to the organization and understanding of the periodic table.
How can you return the number of records from table?
You can return the number of records from a table by executing a SQL query like "SELECT COUNT(*) FROM table_name;". This will count the total number of records in the specified table.
