Exams & Certification

What is the simple past tense of the verb “dance”? A. dances B. danced C. to dance D. will dance The Correct Answer and Explanation is: Correct Answer: B. danced Explanation The simple past tense of the verb “dance” is “danced.” The simple past tense is used to describe an action that was completed at […]

Br 85 (a) Write the full electron configuration for an atom of bromine in the ground state. 1l = 1m_l = 2Z_{eff}$? 1s. Br 85 (a) Write the full electron configuration for an atom of bromine in the ground state. 1²²²²¹²2s²2p?3s²3p?4s²3d¹?4p?(b)Howmanyelectronsinabromineatomhavequantumnumberl = 1?6e?(c)Howmanyelectronsinabromineatomhavequantumnumberm_l = 2?2(d)Whichisbigger:onebromineatomoronebromideion?Explainwhy.BrorBr?bromideion.Anionsarebiggerthantheirneutralatoms(e)Whichhasalargerionizationenergy:bromineorpotassium?BrInabromineatom,electronsinwhichorbitalhavethelargestZ_{eff}$? 1s. The Correct Answer and Explanation is: Correct Answer: (a)

The full electron configuration of bromine is: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p5. Label these electrons as core electrons or valence electrons using the drop-down arrows provided: 1s2 Select ] core electrons Select ] valence electrons 2s Select ] core electrons Select ] valence electrons 2p Select ] core electrons Select ] valence

Write the electron configuration for the following particles S V Cl Al3+ Fe3+ The Correct Answer and Explanation is: Electron Configurations: Explanation Electron configuration represents the distribution of electrons among atomic orbitals. It follows specific rules: Aufbau principle (fill lower energy orbitals first), Pauli exclusion principle (no two electrons in an atom can have the

Write electronic configurations for the following ions: a. Al3+ (Z = 13) b. O2- (Z = 8) c. Fe3+ (Z = 26) d. Cu2+ (Z = 29) e. Cu+ (Z = 29) The Correct Answer and Explanation is: ChatGPT said: Electronic Configurations of Ions a. Al³⁺ (Z = 13)Neutral Al: 1s² 2s² 2p⁶ 3s² 3p¹Al³⁺:

Write down the electronic configuration of al3+ how many electrons are present in its outer most shell The Correct Answer and Explanation is: Electronic Configuration of Al³⁺ The element Aluminium (Al) has an atomic number of 13, which means a neutral aluminium atom has 13 electrons.The electronic configuration of a neutral Al atom is: Al

Use the conversion formula to convert 98.6 Fahrenheit to degrees Celsius. Answer: Fill in the blanks without using conversion tables_ A liter is approximately quart_ kilogram is approximately pounds A meter i8 approximately yard _ 500 grams i8 approximately pound_ E. 100` Celsius is exactly Fahrenheit Celsius i8 exactly _ Fahrenheit: One inch is approximately

Enter the orbital diagram for the ion Cd2+Cd2+. Drag the appropriate labels to their respective targets. Labels can be used once, more than once, or not at all. Not all group 2 targets will be filled. Reset Help 1s Group 1 1s 4d Group 1 4d 2s Group 1 2s 4f Group 1 4f 2p

Enter the orbital diagram for the ion Cd2+ Drag the appropriate labels to their respective targets_ Labels can be used once; more than once; Or not at all Not all group 2 targets will be filled: Reset Help 62 62 62 G2 The Correct Answer and Explanation is: ChatGPT said: Orbital Diagram for Cd²⁺ (Cadmium

Convert -390 degree to radian measure. Write your answer as an exact value. The Correct Answer and Explanation is: To convert an angle from degrees to radians, we use the following formula:radians=degrees×π180\text{radians} = \text{degrees} \times \frac{\pi}{180}radians=degrees×180π​ Step 1: Apply the Formula Given:−390∘-390^\circ−390∘ Using the formula:−390∘×π180=−390π180-390^\circ \times \frac{\pi}{180} = \frac{-390\pi}{180}−390∘×180π​=180−390π​ Now simplify the fraction:−390π180=−13π6\frac{-390\pi}{180} = \frac{-13\pi}{6}180−390π​=6−13π​