H 2A 3A 4A 5A 6A 7A He Li Be ƏN 3 O N 8 Na Mg 38 4B 58 6B 78 r 88 ¬ 18 28 HI SI P S CI Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd AgCd In Sn Sb Te I Xe Cs Ba La Hf Ta W Re 0s Ir Pt Au Hg TI Pb Bi Po At Rn Fr Ra Ac Rf Ha ** Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr (1) What is the name of the element with a valence electron configuration of 2s-2p? (2) What is the name of the element with a valence electron configuration of 3s-3p? Submit Answer Try Another Version 10 item attempts remaining
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
First write the Complete electronic configuration of atom.
1) Valence electrons : 2s2 2p5
Electronic Configuration :
1s2 2s2 2p5
Total electrons = (2+2+5) = 9
Element with atomic number 9 is Fluorine
Valence electrons configuration of Fluorine is
[He] 2s2 2p5
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