Which elements share the most similar chemical properties?

A. Boron and Carbon

B. Oxygen and Sulfur

C. Aluminum ad Bromine

D. Argon and Silicon

Wich term names snow fences made from trees and bushes? A. living fences B. biologics C. drift obstacle D. baffler fences

The balanced equation for water is 2 H2 + O2 to 2 H2O. If I have 21.2g of a product, and I started with 5.6 g of H2, how many grams of oxygen were reacted

How many neutrons does element X have if its atomic number is 39 and its mass number is 75?

5. The element copper has naturally occurring isotopes with mass numbers of 63 and 65. The relative abundance and atomic masses are 69.2% and 30.8% respectively. Calculate the average atomic mass of copper.

What chemical compound is C2HsOH?

List all of the species that would have a net attraction to the positive charge: CH4, CH2Cl2, H3O+, H2O, C2H2Cl2, CO2, N3-,

if the units cancel and you are left with only the desired units for the problem, all the rations were set up correctly. True or false?

How many valence electrons are in c4h6br2?

Calculate the empirical formula from the given percent compositions. 82% nitrogen (N), 18% hydrogen (H)

Atoms of different isotopes of the same element differ in their total number of electrons neutrons protons valence electrons