What groups does the s-block contain?

What groups does the s-block contain?

The s-block in the periodic table of elements occupies the alkali metals and alkaline earth metals, also known as groups 1 and 2. Helium is also part of the s block.

What electron configuration do group 17 have?

ns2np5
The elements of Group 17 (fluorine, chlorine, bromine, iodine, and astatine) are called the halogens. The halogens all have the general electron configuration ns2np5, giving them seven valence electrons. They are one electron short of having full outer s and p sublevels, which makes them very reactive.

What are all the elements that end with a single s electron?

The elements in Group 1 (lithium, sodium, potassium, rubidium, cesium, and francium) are called the alkali metals. All of the alkali metals have a single s electron in their outermost principal energy.

Why are there no p blocks in period 1?

There are no p-block elements in the first period because the first p-orbital is not until the 2nd energy level (n=2). it is made up of groups 13-18. the p-block is 6 groups wide because the p subshell can hold up to 6 electrons.

What is the metal that is grouped with the metalloids?

The post-transition metals cluster to the lower left of this line. Metalloids: The metalloids are boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po). They form the staircase that represents the gradual transition from metals to nonmetals.

What are the group 1 ions?

Group 1A — The Alkali Metals. Group 1A (or IA) of the periodic table are the alkali metals: hydrogen (H), lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).

What are s1, s2, s3, s4 and S6?

, Analyst at U.S. Army (2017-present) S1 is personnel, S2 is Intel and security, S3 is training and operations, S4 is supply, no one really has an S5 anymore but historically it was for plans, and S6 is commo/ IT support.

How are students divided into groups in S10?

S10 are to be divided into 3 groups a, b, and c such that each group has at least one student and the group c has at most 3 students. Then the total number of possibilities of forming such groups is

What should be included in an S-1 filing?

S-1 registration filings typically include information about the total number of shares offered and the price per share as well as Investment Prospectus information offered to investors. A feed of the latest S-1 filings can be found below. OMB 3235-0065 Form S-1 Registration Statement

What kind of cartilage is in the L5-S1 joint?

L5 and S1 are joined by the lumbosacral facet joints lined with articular cartilage. L5-S1 intervertebral disc. A disc made of a gel-like material (nucleus pulposus) surrounded by a thick fibrous ring (annulus fibrosus) is situated between the vertebral bodies of L5 and S1.