Which of the following elements is a metal? a. C b. Sn c. Se d. I e. As What element forms an ion with an electronic configuration of 1s2 2s2 2p6 (or [Ne]) and a -2 charge? Give the symbol for the element. What is the chemical symbol for the potassium element in the peri...
What type of element is argon? In other words, what is it classified as on the periodic table? What is the first element on the periodic table? Give some brief information about it. What is the element based on its electron configuration (shown below)? 1s2 2s2 2p6 3s2 3p5 ...
An element in its ground state has the following electron configuration: (Ne)3s23p2. What is this element? An element in its ground state has the following electron configuration: (Ar)4s23d7. What is this elemen...
What is the valence electron configuration for the arsenic atom? What is the mass number for krypton? Which of the following is the electron configuration for a halogen? a) 1s2, 2s2, 2p6, 3s2, 3p6, 4s2 b) 1s2, 2s2, 2p6, 3s1 c) 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d5 ...
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What is the electron configuration for magnesium? What is the name of the hybrid orbitals used by sulfur in SF4? What is the atomic number of sulfur? What is the electron configuration of an element with atomic number 15? Regarding the ion Cl^{2+}: a. How many electrons are ...
What is the electron configuration of the calcium ion? What is the noble gas configuration for silicon? Which of the following is the electron configuration for a halogen? a) 1s2, 2s2, 2p6, 3s2, 3p6, 4s2 b) 1s2, 2s2, 2p6, 3s1 c) 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d5...
a. [Xe]6s^2 4f^1 b. [Ar]4s^2 3d^3 1s^2 2s^2 2p^6 3s^2 3p^6 3d^2 c. [Kr]5s^1 4d^5 2s^2 What element has an excited state of 1s2 2s2 2p1 3s1? Which element has the excited state electron configuration 1s22s22p43s1? Which electron configuration represents an excite...
A main group element with the valence electron configuration 4s2 is in periodic group. It forms a monatomic ion with a charge of. A main group element with the valence electron configuration 3s^23p^1 is in the periodic group ___. It forms a monatomic ...
Which atom has the electron configuration 1s2 2s2 2p6 3s2 3p6 3d7 4s2? What is the element with the electron arrangement of 2, 8, 7? Create the atomic orbital diagram for chlorine. In a chlorine atom, which subshells contain valence electrons?