Which of these elements will successfully create a 1:1 bond with Carbon (C) Carbon (C)
Silicon (Si)
Beryllium (Be)
Oxygen (0)

Option B, Silicon

Explanation:

The valency of Carbon is 4 as it has four electrons in its outermost shell

The valency of Si is also four hence C

Hence Silicon can form 1:1 bond with the carbon

Valency of Beryllium is 2, hence it can not form 1:1 bond with carbon. Similarly the valency of oxygen and carbon are way different to form 1:1 bond

hence, only option B is correct

b. examine and describe cells