Sub shells - Study guides, Revision notes & Summaries

AQA AS Physical Chemistry 2024 exam questions with 100% correct answers Who described atoms as solid spheres that make up different elements and when? - ANSWERS John Dalton in the 19th century Who suggested that atoms of a particular element had the same mass and atoms of different elements had different masses and when? - ANSWERS John Dalton in 1803 Who discovered the electron and when? - ANSWERS JJ Thomson, 1897 discovered electrons proving atoms weren't indivisible or solid. New m...

Inorganic Chemistry Exam 3 Exam With 100% Correct Answers 2024 What is a transition metal defined as? - answerA transition metal is an element whose atom has an incomplete d sub-shell, or which can give rise to cations with an incomplete d sub-shell What elements are excluded from the transition metals and why? - answerZinc, Cadmium, and Mercury are excluded since they have a full d10 sub-shell Why does Chromium (Cr) have the electron configuration 4s13d5 and not 4s23d4? - answerPreferenc...

Inorganic Chemistry Exam 3 Exam With 100% Correct Answers 2024 What is a transition metal defined as? - answerA transition metal is an element whose atom has an incomplete d sub-shell, or which can give rise to cations with an incomplete d sub-shell What elements are excluded from the transition metals and why? - answerZinc, Cadmium, and Mercury are excluded since they have a full d10 sub-shell Why does Chromium (Cr) have the electron configuration 4s13d5 and not 4s23d4? - answerPreferenc...

AQA AS Physical Chemistry 2024 Exam Questions And Answers Who described atoms as solid spheres that make up different elements and when? - ANSWER- John Dalton in the 19th century Who suggested that atoms of a particular element had the same mass and atoms of different elements had different masses and when? - ANSWER- John Dalton in 1803 Who discovered the electron and when? - ANSWER- JJ Thomson, 1897 discovered electrons proving atoms weren't indivisible or solid. New model named pl...

Falsifiable concentrates (EC or E) - ANS Formulations made up of the technical material, solvents and emulsifiers. Some agitation is required. Once dry, pesticide residue is barley visible. Wettable Powder (WP) - ANS These formulations are made by impregnating or coating an appropriate powder with the technical insecticide. Wettable Powders do not dissolve in water and frequent agitation is usually required. Heavy applications may leave visible deposits. Soluble Powders (SP) - ANS ...

How many electrons can each orbital hold? Two How many electrons can be held in each sub shell? S - 2 P - 6 D - 10 F - 18 Put the sub shells in order do their energy, lowest to highest S, p, d and f How do we fill the p and d subshells singly first and then doubly What is an orbital? A region of space around the nucleus where there is a 95% chances of finding an electron What is the Aufbau principle? An electron occupies the lowest-energy orbital that can receive it What ha...

AS level OCR Chemistry Exam Questions And Answers (Verified And Updated) Isotopes - answerDifferent atomic forms of the same element. Atoms with the same number of protons but a different number of neutrons Relative atomic mass - answerThe mean mass of an atom of an element, compared to 1/12th of the mass of an atom of carbon-12 Concentration= - answerNumber of moles ÷ Volume One mole - answer6.02×10^23 Number of moles= - answermass ÷ molar mass r.t.p - answer25 ºC 100 kPa (1 atm) ...

AQA AS Physical Chemistry 2024 exam questions with 100% correct answers Who described atoms as solid spheres that make up different elements and when? - ANSWERS John Dalton in the 19th century Who suggested that atoms of a particular element had the same mass and atoms of different elements had different masses and when? - ANSWERS John Dalton in 1803 Who discovered the electron and when? - ANSWERS JJ Thomson, 1897 discovered electrons proving atoms weren't indivisible or solid. New m...

AS level OCR Chemistry Exam Questions And Answers (Verified And Updated) Isotopes - answerDifferent atomic forms of the same element. Atoms with the same number of protons but a different number of neutrons Relative atomic mass - answerThe mean mass of an atom of an element, compared to 1/12th of the mass of an atom of carbon-12 Concentration= - answerNumber of moles ÷ Volume One mole - answer6.02×10^23 Number of moles= - answermass ÷ molar mass r.t.p - answer25 ºC 100 kPa (1 atm) ...

Ca Applicators Study Course Exam Questions and Answers 100% Pass What is a Trade Name - Correct Answer ️️ -The name given to the product by the manufacture. What are Inert Ingredients - Correct Answer ️️ -Ingredients with no pesticide action. What is the Signal Word - Correct Answer ️️ -Danger, Warning or Caution, which denotes Toxicity What are Re Entry Levels - Correct Answer ️️ -The amount of time or condition of the application before an unprotected person may enter t...