ram3130 ram3130

22-11-2021
Chemistry

contestada

why the table perdioc has 3 columns in its group 8 ,
i need reference about that please

Respuesta :

kittybunny119 kittybunny119

22-11-2021

Answer: It just haven’t been discovered yet

Explanation:

Because the periodic table was discovered long ago some elements haven’t been discovered thats why it maybe has 3 columns

Answer Link

Otras preguntas

True or False: The circumference of a circle divided by its diameter is always equal to pi.

Sarah drank 75% of a one-pint carton of milk at lunchtime. How many ounces of milk were left in the carton?

A triangle has the lengths of 8 kilometers, 15 kilometers,and 17 kilometers. Is it a right triangle?

what is the molarity of 50.84 g of Na2CO3 dissolved in 0.400 L solution?

Help me what is this

1. Einstein published three major scientific papers. One of these put forward a new way of calculating the size of molecules. Another explained Brownian motion

Four is greater than the difference of three times a number and five. What is the number?

What is the value of x in the solution to the system of linear equations? ly= 3x+2 ly=x-4 PLEASE HELP!!!

Sheila got 87% of the problem correct. Patrick got 91/100 correct. Who scored higher?

URGENT! - Question worth 15 points! The triangle is this question is not drawn accurately. Use Pythagoras' Theorem to explain why triangle A must be right-angle