Use the periodic table to give the name and symbol for each...

Name: Problem 42, Chapter 2: Chemistry
Uploaded: 2019-09-17T03:13:31-08:00
Duration: 3 min 32 s
Channel: William Mills
Description: Use the periodic table to give the name and symbol for each of the following elements: (a) the halogen in the same period as the alkali metal with 11 protons (b) the alkaline earth metal in the same period with the neutral noble gas with 18 electrons (c) the noble gas in the same row as an isotope with 30 neutrons and 25 protons (d) the noble gas in the same period as gold

Use the periodic table to give the name and symbol for each of the following elements: (a) the halogen in the same period as the alkali metal with 11 protons (b) the alkaline earth metal in the same period with the neutral noble gas with 18 electrons (c) the noble gas in the same row as an isotope with 30 neutrons and 25 protons (d) the noble gas in the same period as gold

Use the periodic table to give the name and symbol for each of the following elements:

(a) the halogen in the same period as the alkali metal with 11 protons
(b) the alkaline earth metal in the same period with the neutral noble gas with 18 electrons
(c) the noble gas in the same row as an isotope with 30 neutrons and 25 protons
(d) the noble gas in the same period as gold

Key Concepts

Periodic Table

The Periodic Table is a systematic arrangement of chemical elements based on their atomic numbers, electron configurations, and recurring chemical properties. It serves as a fundamental tool in chemistry for understanding element relationships and predicting element behavior in reactions.

Groups and Periods

Groups refer to the vertical columns on the periodic table where elements share similar chemical properties, while periods are the horizontal rows that indicate elements with the same number of electron shells. Understanding these divisions is essential for locating elements and understanding how their properties evolve across the table.

Elemental Families

Elemental families, such as halogens, noble gases, alkali metals, and alkaline earth metals, are categories of elements that exhibit common physical and chemical characteristics. Recognizing these families helps in predicting reactivity, bonding behavior, and other chemical properties of the elements.

Atomic Structure and Isotopes

Atomic structure concepts, including the number of protons, neutrons, and electrons, are pivotal in identifying elements and understanding isotopes. The atomic number, defined by the number of protons, uniquely identifies an element, while variations in the number of neutrons lead to different isotopes with similar chemical properties but different atomic masses.

Transcript

00:01 In this question, we're asked to use a pyrrhic table to name and give the symbol for each of the following elements that are described.

00:09 So for a, it says it wants the name and symbol of the halogen in the same period as the alkali metal with 11 protons.

00:18 So alkylam metal, that tells us we're in the first group, the leftmost column of the pyrrarch table.

00:24 11 protons means we're looking for the element with an atomic number of 11.

00:28 And if we checked our parric tables, that would be sodium or na.

00:34 And then it's asking for the halogen in the same period as sodium.

00:39 Sodium is in period three.

00:40 It's the third row.

00:42 So we go all the way to the right of the paragraph table.

00:44 The second column from the right, those are the halogens.

00:48 And in period three of the halogens, we would find chlorine.

00:57 And chlorine has symbol cl, put those in parentheses.

01:06 B says an alkaline earth metal in the same period as the noble gas of 18 electrons.

01:14 So alkaline earth metals, that's the second column on the periodic table.

01:20 And it says the same period as a neutral noble gas with 18 electrons.

01:25 So if it's neutral, that means as the same number of protons and electrons...

Please give Ace some feedback