Which statement is inconsistent with the concept of isotopes of the same element?
a. isotopes have the same number of protons b. isotopes have the same atomic number
c. isotopes differ in mass number
d. isotopes differ in number of neutrons present
e. isotopes differ in their nuclear charge

2b2t

explanation:

2b2t

warm front forms when a moist, warm air mass slides up and over a cold air mass. as the warm air mass rises, it condenses into a broad area of clouds. a warm front brings gentle rain or light snow, followed by warmer, milder weather.

hope i !

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.