Which of the following constitutes a covalent bond?

Which of the following constitutes a covalent bond?

Which of the following molecules does not contain polar bonds?

Which of the following molecules does not contain polar bonds?

How many single covalent bonds would the element selenium be expected to form in order to obey the octet rule?

How many single covalent bonds would the element selenium be expected to form in order to obey the octet rule?

Which molecule exhibits trigonal pyramidal geometry?

Which molecule exhibits trigonal pyramidal geometry?

How many single covalent bonds would the element sulfur be expected to form in order to obey the octet rule?

How many single covalent bonds would the element sulfur be expected to form in order to obey the octet rule?