Question

the abundance of elements come from fusion reactions where atomic nuclei (center) are brought together by some force. they fuse together into heavier elements, producing many different elements. complete the following fusion reactions: hint: add up the elemental numbers, open up a periodic table. h (element number 1)+h(element number 1) -> he (element number 2) 1. h + he -> 2. he + he -> 3. li + he -> 4. ne + he -> explain the four pieces of evidence for the big bang theory.

Explanation:

Step1: Recall element numbers

Hydrogen (H) has atomic number 1, Helium (He) has atomic number 2, Lithium (Li) has atomic number 3, Neon (Ne) has atomic number 10.

Step2: Balance fusion reactions by atomic - number conservation

1. For \(H + He

ightarrow\), atomic number of \(H = 1\) and \(He=2\), so the product has atomic number \(1 + 2=3\), which is \(Li\). So the reaction is \(H + He
ightarrow Li\).

1. For \(He+He

ightarrow\), atomic number of \(He = 2\), so \(2 + 2 = 4\), the product is Beryllium (Be). So the reaction is \(He + He
ightarrow Be\).

1. For \(Li+He

ightarrow\), atomic number of \(Li = 3\) and \(He = 2\), so \(3+2 = 5\), the product is Boron (B). So the reaction is \(Li + He
ightarrow B\).

1. For \(Ne+He

ightarrow\), atomic number of \(Ne = 10\) and \(He = 2\), so \(10 + 2=12\), the product is Magnesium (Mg). So the reaction is \(Ne + He
ightarrow Mg\).

Answer:

1. \(H + He

ightarrow Li\)

1. \(He + He

ightarrow Be\)

1. \(Li + He

ightarrow B\)

1. \(Ne + He

ightarrow Mg\)