( ( Hydrogen chloride ) ( ( ( ( is ( a ( diatomic molecule ) ) ) , ) ( ( consisting ( of ( a ( hydrogen atom ) ) ) ) ( ( H and ) ( ( a ( chlorine ( atom Cl ) ) ) ( connected ( by ( a ( covalent ( single bond ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NN Hydrogen) (NN chloride)) (VP (VBZ is) (NP (DT a) (JJ diatomic) (NN molecule)) (, ,) (S (VP (VBG consisting) (PP (IN of) (NP (DT a) (NN hydrogen) (NN atom))) (NP (NP (NNP H)) (CC and) (NP (NP (DT a) (NN chlorine) (NN atom) (NN Cl)) (VP (VBN connected) (PP (IN by) (NP (DT a) (JJ covalent) (JJ single) (NN bond))))))))) (. .)))
Hydrogen chloride is a diatomic molecule, consisting of a hydrogen atom H and a chlorine atom Cl connected by a covalent single bond.
(ROOT (S (NP (NN Hydrogen) (NN chloride)) (VP (VBZ is) (NP (DT a) (JJ covalent) (NN compound))) (. .)))