Fill in the following blanks with an appropriate chemical symbol, number, or wor

Question

Fill in the following blanks with an appropriate chemical symbol, number, or word: Calcium has the electron configuration is Is^2, 2s^2, 2p^4, 3s^2, The element with 14 protons in its nucleus is The least electronegative clement in the third period (now) of the Periodic Table is An sp^2 carbon atom forms one bond. The pentamer of hydrogen cyanide found in DNA and ATP is named The second row element which has a [+1] charge in compounds when it forms three bonds is Any salt is composed of Carbon monoxide contains how many valence electrons; and if each atom has a pair of non- bonding electrons in its Lewis formula, what is the charge on the C atom? The nitrogen atom in formaldehyde imine (CH_3N) is N hybridized. ROH stands for any while RCO_2R' is any carboxylate The normal alkane containing 15 carbons is named How many isomeric alcohols are butyl alcohols and all have the molecular formula The pi(pi) bond between two sp2 carbon atoms is made by the overlap of two C atomic orbitals. A triple bond contains two bonds at right angles to each other. Give the length of a C-Csingle bond and state the units used The general molecular formula for a bicycloalkane is From the following molecular formulas draw a condensed Lewis structural formula for a molecule containing the functional group indicated and show all non-bonding electrons. 2 degree amine [C_5H_13N] carboxylic acid [C_4H_8O_2] 1 degree amide [C_3H_2NO]

Explanation / Answer

1. (a) Calcium has the electron configuration 1s2,2s2, 2p6,3s2,3p6,4s2

   (b) The elements with 14 proton in its nucleus is Silicon.

(c) The least electronegative element in the third period (row) of the periodic table is Sodium.

(Sodium is the most electropositive element of third period (row))

(d) An sp2 carbon atom forms one pi bond.

(The pi bond between the carbon atoms is formed due to the 2p-2p overlap)

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