Answer:
a) 58Ni
b) 43Ti
c) 34P
d) 18O
e) 58Ni
f) 43Ti
g)34P
h) 18O
i) 54Cr
Explanation:
<em>a) contains 28 protons and 30 neutrons:</em>
An atom with 28 protons and 30 neutrons has an atomic number of 28 and a mass number of (30+28) = 58.
The atom with atomic number 28 is Ni.
<em>b) contains 22 protons and 21 neutrons:</em>
An atom containing 22 protons and 21 neutrons has an atomic number of 22 and an atomic mass of (22+21) = 43
The atom with atomic number 22 is Titanium (Ti).
This is the 43Ti isotope of titanium
<em>c) contains 15 electrons and 19 neutrons</em>
An atom with 15 electrons would have the same amount of , 15 protons (considering it to be neutral) and has 19 neutrons.
Thus, the atomic number of the atom would be 15 and the mass number would be (15+19) = 34
The atom with atomic number 15 is phosphorus (P).
This is the 34P isotope of phosphorus
<em>d) an oxygen atom with 10 neutrons:</em>
Oxygen has an atomic number of 8, thus there are 8 protons in an atom of oxygen.
The mass number of the oxygen atom with 10 neutrons would be (8+10) = 18
This is 18O - isotope.
<em>e) contains 28 protons and 30 neutrons:</em>
An atom with 28 protons and 30 neutrons has an atomic number of 28 and a mass number of (30+28) = 58.
The atom with atomic number 28 is Ni.
<em>f) contains 22 protons and 21 neutrons:</em>
An atom containing 22 protons and 21 neutrons has an atomic number of 22 and an atomic mass of (22+21) = 43
The atom with atomic number 22 is Titanium (Ti).
This is the 43Ti isotope of titanium
<em>g) contains 15 electrons and 19 neutrons:</em>
An atom with 15 electrons would have the same amount of , 15 protons (considering it to be neutral) and has 19 neutrons.
Thus, the atomic number of the atom would be 15 and the mass number would be (15+19) = 34
The atom with atomic number 15 is phosphorus (P).
This is the 34P isotope of phosphorus
<em>h) an oxygen atom with 10 neutrons:</em>
Oxygen has an atomic number of 8, thus there are 8 protons in an atom of oxygen.
The mass number of the oxygen atom with 10 neutrons would be (8+10) = 18
This is 18O - isotope.
<em>i) The atomic number of Cr is 24
</em>
The mass number is given to be 54.
This is the 54Cr isotope and has 24 protons and 30 neutrons
= 4 - 2 = 2
= 3 - 1 = 2
= 7 + 3 = 10
= 16 + 2 = 18
= 12 - 2 = 10
= 22 - 4 = 18
= 19 - 1 = 18