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If you are given with the atomic number of an element you can find it’s period number and group number. The period number is related to the number of electron occupied shells in the element and the period number is linked to its valence electrons.

Helium is the second element on the periodic table. It is located in period 1 and group 18 or 8A on the righthand side of the table. This group contains the noble gases, which are the most chemically inert elements on the periodic table. Each He atom has two protons and usually two neutrons and two electrons.

A period in the periodic table is a row of chemical elements. All elements in a row have the same number of electron shells. Each next element in a period has one more proton and is less metallic than its predecessor.

The third period contains eight elements: sodium, magnesium, aluminium, silicon, phosphorus, sulfur, chlorine, and argon. All of the period 3 elements occur in nature and have at least one stable isotope.

There are only two elements in the first period: hydrogen and helium. Period 1 elements follows the duet rule, they only need two electrons to complete their valence shell. These elements can only hold two electrons, both in the 1s orbital. Therefore, period 1 can have only two elements.

A period is the name given to a horizontal row of the periodic table. Apart from period 1, every period begins with an alkali metal and ends with a noble gas. Period 1 contains only two elements: hydrogen and helium. Periods 6 and 7 are the longest periods, each containing 32 elements.

More specifically, our rotation period (the time elapsed for one rotation) with respect to the stars is called a sidereal day. A sidereal day is 24 sidereal hours, or 23 hours and 56 minutes on a normal clock.

Noun. 1. period of time – an amount of time; “a time period of 30 years”; “hastened the period of time of his recovery”; “Picasso’s blue period” period, time period. fundamental measure, fundamental quantity – one of the four quantities that are the basis of systems of measurement.

“Period” is rooted in the Greek words “peri” and “hodos” (periodos) meaning “around” and “way/path.” This eventually turned into the Latin “periodus” meaning “recurring cycle.” Use of the English term “period” to describe menstruation began in the early 1800s (1). These euphemisms are found in texts spanning millennia.

Let’s not forget the bonus pain associated with our monthly periods (comparable to that of a heart attack) and that of childbirth. …

In 19th-century texts, both British English and American English were consistent in their usage of the terms period and full stop. The word period was used as a name for what printers often called the “full point”, the punctuation mark that was a dot on the baseline and used in several situations.

“Healthy” periods can have a slight smell of blood. They may even have a slight metallic smell from iron and bacteria. Generally speaking, period odors aren’t noticeable to others. Good hygiene practices can also combat normal period odors and make you more comfortable during menstruation.

Black blood can appear at the beginning or end of a person’s period. The color is typically a sign of old blood or blood that has taken longer to leave the uterus and has had time to oxidize, first turning brown or dark red and then eventually becoming black.

These chemicals stimulate the smooth muscles in your uterus to help it contract and shed its lining each month. If your body produces more prostaglandins than it needs, they’ll enter your bloodstream and have a similar effect on other smooth muscles in your body, like in your bowels. The result is more poop.

Give her physical comfort: Give her a comforting hug, and if you have large hands, put them to some good use by giving her a nice massage. A back-rub or a foot massage can really help. Let her sit on your lap, cuddle if she feels like it. Even holding her hand could make her feel better.

7 things you should never say to a girl on her period

• Never say that she appears to be “tired” (or something similar)
• Never pick a fight with her over that insignificant incident from last week.
• Never say that she seems to have gained some weight.
• Never tell her “talk to me only when you period is over” angrily.

Premenstrual Syndrome It can include headaches, back pain, irritability or moodiness, feeling sad or emotional, bloating, and breast tenderness.2 Some people don’t have any of these symptoms while others have them all.

V. Sexual intercourse during menstruation can affect negatively the man’s sexual desire (libido) and make him temporarily impotent because of the presence and smell of menstrual material.

“Kissing is great if you have a headache or menstrual cramps,” says Demirjian. You may be inclined to wave away advances when you’re curled into an achy ball, but the blood-vessel dilation brought on by a good long smooching session can really help ease your pain.

To the issue of your menstrual period’s influence on your boyfriend, research has shown that menstruation does not affect male testosterone levels in any significant way. Though these biological factors may not give reason for your partner’s emotions, it’s possible that there’s a more psychological explanation at play.

Guys don’t have periods because they don’t have a uterus, but their bodies develop and change too – the changes are just different. For example: their voice changes and they develop hair on their face and other parts of their bodies. So, although guys don’t get periods, their bodies do go through changes too.

People who are born male and living as men cannot get pregnant. A transgender man or nonbinary person may be able to, however. It is only possible for a person to be pregnant if they have a uterus.

It feels like something is crushing the organs in your lower abdomen. It is not an exaggeration. The pain is terrible and it feels like the lower abdomen is being crushed by something. Or something heavy is kept on the uterus and slowly the weight is increasing.

5 classic signs that tell if a man is virgin!

1. 01/7Male virginity. Gone are the days when female virginity meant everything.
2. 02/7Five signs.
3. 03/7​Quick orgasm.
4. 04/7​May bleed.
5. 05/7​Clueless in bed.
6. 06/7Does not know what foreplay is.
7. 07/7Awkward.