# On the technetium periodic table why is its relative atomic mass usually in brackets?

Because its a synthetic element.

The number that appears in brackets is the most stable isotope of technetium.

### When do you use parentheses and brackets?

The different types of brackets are: round brackets, open brackets or parentheses: ( ) square brackets, closed brackets or box brackets: [ ] curly brackets, squiggly brackets, swirly brackets, braces, or chicken lips: { } angle brackets, diamond brackets, cone brackets or chevrons: < > or ⟨ ⟩ Parentheses (singular, parenthesis)---sometimes called round brackets, curved brackets, oval brackets, or just brackets, or, colloquially, parens --- contain material that could be omitted without destroying or altering…

### What are brackets in algebra?

There are both "square" and "curly" brackets used in algebra. They are [] and {} respectively in type. Usually square brackets are used to group smaller numbers of terms than curly brackets, and even square brackets are used only to group quantities some of which are in parentheses. Thus a suitable use example would be {[(a - b)(c + d) - a2]/[(fg + hj)/[k(l/m)]}. Larger square brackets are also used to set off numbers in…

### What do you do if one of your brackets comes off the tooth but it is still on the wire?

Brackets are usually attached to the wire by a very short rubber band. Cut the rubber band and save the bracket. So see the Orthodontist to put it back. If you have orthodontic wax, put it on top of any loose brackets about to fall off. This will keep the brackets in place until they can be properly replaced.

### Where can one find affordable pantry shelves?

Affordable is a relative term. The local building supply retailer has brackets and shelves that can easily be installed. Some also have unfinished shelving of various sizes. The next step up in affordability would be a discount retail store where there are a range of products, usually in the Home Organization department.

### How do you write an interval in math?

Usually as a range in brackets. The curved brackets, ( and ), are used for "open" intervals, where the end points are not included. The square brackets, [ and ], are used for closed intervals where the end points are included. You can also have semi-closed brackets. For example x is in (3,5) is equivalent to 3 < x < 5 x is in [3,5] is equivalent to 3 â‰¤ x â‰¤ 5 x is…

### What is the Doppler efect?

A change of frequence in a wave (usually in a sound, or electromagnetic wave), due to the relative movement between the source of the sound and an observer. A change of frequence in a wave (usually in a sound, or electromagnetic wave), due to the relative movement between the source of the sound and an observer. A change of frequence in a wave (usually in a sound, or electromagnetic wave), due to the relative movement…

### What are brackets used for?

in math, they act just like parenthesis, to tell you to operate on the terms inside the brackets, first. If you have several levels of nested parenthesis, then using pairs of brackets [] and braces {} help you to see which ones go together. This usually is only used in handwritten problems, as most computer software only recognizes parenthesis () to separate expressions.

### What are Excel functions two components?

All functions have a name and have brackets just after them. So they could be said to be the two main components. For some functions it is mandatory to have something inside the brackets. These are usually known as arguments. For functions that do have them, there are some arguments that are mandatory.