【】Plural of Crisis||Plural for Crisis|| What is the plural of the word Crisis?
Plural of Crisis
*Select one-
A) Crisis
B)Crises
C)Crisises
D)None
Answer:The plural of crisis is (B) crises.
【】How Many Valence Electrons Does Selenium (Se) Have?|| Selenium (Se) Valence Electrons
Selenium has six valence electrons. Read:CO2 Lewis Structure Explanation: Now I am going to show you how to find valence electrons in selenium in just 5 steps. Add caption Step-1: First, find the atomic number of selenium from periodic table. From periodic table ,we see that the atomic number of selenium is 34. Step-2: We know that the atomic number of selenium is 34.So selenium has 34 protons and 34 electrons as the charge of electrons and protons are equal but opposite in nature.The charge of proton is +1 and the charge of electron is -1. Read:CO2 Lewis Structure Step-3: Now write the electron configuration of selenium . Se(34)=1s²2s²2p⁶3s²3p⁶4s²3d¹º4p⁴ Rewrite this from low to high value of n. Se(34)=1s²2s²2p⁶3s²3p⁶ 3d¹º 4s² 4p⁴ Read:CO2 Lewis Structure Step-4: Se(34)=1s²2s²2p⁶3s²3p⁶ 3d¹º 4s² 4p⁴
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