Answer : The correct option is, (c) 1
Explanation :
Isotope : It is defined as the element that have the same number of protons but have the different number of neutrons of each of the atom.
Isotope notation : It is also called as nuclear notation. In isotopic notation we can easily determine an isotope's mass number, atomic number, the number of neutrons and protons in the nucleus.
The general isotopic representation of an atom is:
where,
Z = Atomic number of the atom
A = Mass number of the atom
X = Symbol of the atom
As we are given two isotopes:
and
From this we conclude that,
The number of neutrons in isotope = y-x
The number of neutrons in isotope = (y+1)-x
Difference between the number of neutrons in the isotopes = [(y+1)-x] - [y-x] = 1
Therefore, the difference between the number of neutrons in the isotopes is 1.
The new item formed is called a product.
The amount of oxygen needed would be 80.19 grams
<h3>Stoichiometric problems</h3>
From the equation of the reaction:
The mole ratio of oxygen and ammonia is 3:4
Mole of 56.8g ammonia = 56.8/17 = 3.34 moles
Equivalent mole of oxygen = 3/4 x 3.34 = 2.5059 moles
Mass of 2.5059 moles oxygen = 2.5059 x 32 = 80.19 grams
More on stoichiometric problems can be found here: brainly.com/question/15047541
#SPJ1
a. Group 2
b. Metal
a. The current highest numbered element known is Oganesson with an atomic number of 118 and it's the last period 7 element in group 18 (Noble gases). The hypothetical element number 120, would be the 2nd element in period 8 and the described electron configuration matches other group 2 elements such as Beryllium, Magnesium, Calcium, Strontium, Barium, and Radium.
b. The hypothetical element would be quite similar to the other group 2 elements which are the alkaline earth metals. The element would be expected to be a bit more reactive than Radium.