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Use the valencies of hydrogen and silicon to predict the chemical formula of silicon hydride. - Leaving Cert Chemistry - Question e - 2020
Question e
Use the valencies of hydrogen and silicon to predict the chemical formula of silicon hydride.
Worked Solution & Example Answer:Use the valencies of hydrogen and silicon to predict the chemical formula of silicon hydride. - Leaving Cert Chemistry - Question e - 2020
Step 1
Use the valencies of hydrogen and silicon
Answer
Silicon (Si) has a valency of 4, meaning it can form four bonds with other atoms. Hydrogen (H) has a valency of 1, indicating it can form one bond with other atoms. To form silicon hydride, each silicon atom will bond with hydrogen atoms. Hence, with one silicon atom bonding to four hydrogen atoms, the chemical formula for silicon hydride is SiH₄.