Why is helium in group 18 on the periodic table though it only has 2 valence electrons?

The double bond between carbon and oxygen is similar to an alkene C-C, except that C o is: a) shorter and weaker. b) shorter and stronger c) longer and weaker. d) longer and stronger.

In the chemical symbols for ions such as Fe^3^ + and Na^1^+, what do you call the little numbers above the normal line of text? superscript numbers subscript numbers

Static electricity will transfer by friction, conduction or induction.

On a weekend trip to Winnipeg (Canada) you see that gasoline sells for 103.6 cents Cnd per liter. What is the cost of gasoline in US dollars per gallon? Should you fill up in Winnipeg or wait until you get back to Pembina?

What is the relationship between genes, chromosomes, and DNA? How are they organized inside of a cell?

Give the nuclear symbol for the isotope of phosphorus for which a=31? enter the nuclear symbol for the isotope (e. g., 42he).

What is a substance that cannot be broken down further by chemical means

How does the cow cross the road

Consider these two electron configurations for neutral atoms l and m. l - 1s22s22p63s2 m - 1s22s22p63s13p1 what is the atomic number of l

A chemist in an imaginary universe, where electrons have a different charge than they do in our universe, performs the millikan oil drop experiment to measure the electron's charge. the charges of several drops are recorded below.