The bond angle marked as ‘a’ in the molecule above is about: D. 120 degrees. That means the angle between the atoms forms a trigonal planar shape.
<h3>What is the bond angle?</h3>
The bond angle is an angle between two bonds that measures in degrees and is calculated by using the spectroscopic method. The bond angle depends on the bonds and the number of lone pairs an atom has.
The molecule above contains 3 electron charge clouds around them: a single bond to carbon, a single bond to oxygen, and a double bond to the other oxygen. Hence, the O-C=O bond angle from the molecule above is 120 degrees.
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Answer:
10 neutrons
Explanation:
The mass number is equivalent to the protons + neutrons so...
18 - 8 = 10 neutrons
Answer:
since 1 mole = 6.022×10^23
hence in 2.32 moles no. of atoms= 6.022×10^23 × 2.32
=
13.97104 ×10^23
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Answer:
b. 2-4
Explanation:
Look at the slope of the line, between 0-2 and 4-6 the slope is only 10, but between 2-4 the slope is 20, so that's when the temperature is changing the fastest. In the same time it took for the water to increase by 20 degrees between 0-2 and 4-6, the temperature of the water increased by 40 degrees between 2-4 so that's when the change is the fastest.
Actinium is the most reactive element or metal in group 3.
Explanation:
Reactivity of an element or metal is defined as its tendency to loose or gain atoms. Group 3 elements consist of metal. We know that reactivity of metal increases as we go down to the bottom of the column.
group 3 metals have 3 electrons in valence shell. They react by loosing 3 electrons. it has oxidation state of +3 and are electropositive.
Group 3 consists of scandium, yttrium, lanthanum and actinium.
Actinium is called actinide.
