1. Substance Az is blue in color and reacts with substance B2, which is yellow in color. They form a new substance AB, as shown in the chemical equation below.
A2 + B2 → 2AB
What is the color of AB?
a. Yellow
b. Blue
c. Green
d. Not possible to predict with the information given

Numbers with a end value of 4 or lower are rounded up, while with an end value of 5 or higher are rounded down. true or false?

Read the given expression. x = number of protons − number of core electrons which of the following explains the identity of x and its trends across a period? x is the effective nuclear charge, and it remains constant across a period. x is the screening constant, and it remains constant across a period. x is the effective nuclear charge, and it increases across a period. x is the screening constant, and it increases across a period.

What elements have 2 electrons inthe 4s sublevel